Tuesday, September 29, 2026

The Light Dimension


Workingman’s Dead rolled on the cassette player, the Grateful Dead cranking out an energetic version of “Uncle John’s Band.” Always one of my favorites, I turned up the volume.

“Well, the first days are the hardest days, don’t you worry anymore…”

I listened attentively to the close harmony as I sat on the short steps that led up from the sewing floor to the small offices at the back of our little shop. Once a mom-and-pop grocery store, the small wood-framed building at the base of Seattle’s Queen Anne Hill was now our factory.

I wasn’t idle. My hands were fully engaged in assembling pole sets for Omnipotents, gluing aluminum ferrules onto spiral-wrapped fiberglass pole sections with a crack-filling epoxy. The west-facing windows captured and magnified the late afternoon heat on that cloudless sunny day. Even though I was wearing shorts and a t-shirt, probably a Grateful Dead or Ski Hut t-shirt, I perspired freely and fought my torpor. It felt too hot to work.

A visitor interrupted the ordinariness of the afternoon. A man in a rumpled brown suit approached our front door, looked in tentatively, and walked in. His tie askew, he looked a bit weary and apprehensive, carrying his boxy brown briefcase in the heat of the day. I wondered, who is this guy?

He certainly didn’t resemble our regular customers. They varied from disheveled climbing bums who needed good gear to well-heeled outdoor couples wearing their barely used mountain parkas. We didn’t get any suits. Probably lost and looking for directions, I thought.

The man who looked as if he might be lost introduced himself.

“Hello, I’m Joe Tanner. I’m from W.L. Gore.”

Joe was an engineer from a technology company based in Wilmington, Delaware. After a three-week trip to introduce a new fabric to the outdoor companies of the Rockies and the West, he finally arrived at Early Winters, a whistle-stop if there ever was one. How had he heard about us?

While waiting for his Denver appointment in a sparse reception area, Joe picked up a copy of Mountain Gazette. Paging through the niche publication, he noticed a small black-and-white space ad. Great Pacific Ironworks. He did not know of them, but they seemed a likely candidate for his fabric, so he added them to his list of companies to visit.

Joe drove his rental car north to Ventura. The Pacific Coast Highway was a two-lane driver’s road that curved back and forth, up and down as it snaked along the coast with the vast expanse of the Pacific Ocean below. As he approached Ventura, he wondered if this small town held any promise for his quest to find the companies that would embrace his new product. He pulled into the parking lot at Great Pacific, looking forward to meeting Tom Frost.   

Tom, already a legend in the Yosemite climbing community, was a disarmingly approachable and friendly guy. He welcomed Joe and gave him the company tour. As they walked, Joe noticed a periwinkle blue tent pitched in a showroom. It was an Early Winters Omnipotent, the same tent that I had left with Tom Frost several weeks earlier on a stop after a Sierra ski touring trip before I returned to Seattle.

As an experienced engineer, Joe quickly assessed the structural principles, determining it was
no ordinary mountaineering tent. Intrigued, he asked Tom to tell him about it. Tom gave Joe the highlights and finished by suggesting,

“These are some guys that you should talk to. They might be interested in your fabric.”

He gave Joe our company name and address.

After visiting every potential client that he could find in California, Joe headed for the Pacific Northwest. He stopped in Portland to call on Hirsch Weiss, who made the White Stag products, and then with Tim Boyle at Columbia Sportswear. Flying towards Seattle, Joe looked from the window at the stunning massif of Mt. Rainier, glaciers gleaming in the sun. It spoke to him that he had come to the right place, a vast, rugged wilderness where intrepid adventurers would welcome his new product. He felt this was a good omen that portended success.

Seattle began at Eddie Bauer, REI, and Sportcaster, all with significant research and manufacturing facilities, capable of quickly developing and bringing new products to market. Would one of them be the first to incorporate the new Gore-Tex fabric into a commercial product? As with the outdoor industry folks that he visited in California and Oregon, they all accepted Joe’s offer to send sample yardage.

But something important was missing. Where was the wild enthusiasm that Joe thought he might hear? Yes, everyone was very cordial, but no one seemed truly excited. He decided to visit the tiny company that Tom Frost had pointed him towards, Early Winters.

As Joe drove to the Queen Anne area of Seattle, he wondered what he’d find. He noticed the Seattle Center and the Space Needle, the landmark tower built for the 1962 World’s Fair. Lower Queen Anne wasn’t an industrial area where one could expect to find a manufacturing facility. He drove slowly as he scouted for Early Winters, searching for the corner of Queen Anne and West Thomas; he saw only apartments and small shops. Was he lost?

And then it appeared, a small one-story, flat-roofed, wood-frame building on the corner at 300 Queen Anne North. The façade had a windowed double door flanked by two front picture windows, and on the fascia above were large hand-painted plywood letters. They spelled out Early Winters, Ltd. At first glance, it was not very impressive, but Joe, someone who always followed through, parked his car and prepared to meet the folks at Early Winters.

When he opened the front door and looked in, he saw three sewing machines, a fabric cutting table, and only a few workers. Everyone was wearing shorts and T-shirts. They all looked like hippies. Hippie music filled the small factory floor.

A scruffy young man approached him. He looked friendly, but Joe thought to himself,

“This is probably not going to be my best sales call.”

He did not expect much from this last Seattle sales pitch. It looked for all the world like a real long shot, a complete waste of time. Hot and tired, he sighed and entered.

The Omnipotent, the world’s best two-person mountaineering tent, was our only Early Winters product. Made in small production runs, we sold them directly to customers in our shop, at outdoor shows, and through mail order. Our limited wholesale program hadn’t taken off, and we now realized that it would never take off. Consequently, our sales were limited.

Not enough people knew about the Omnipotent or needed the world’s best mountaineering tent. Even if they wanted it, few felt they could afford it. We desperately needed a second act, another more mainstream product. Tents were our expertise, so we set out to create a lighter-weight, more affordable two-person backpacking tent. There were more casual backpackers than dedicated mountaineers, and weight was always an issue for backpackers.

Inspired by Jack Stephenson’s Warmlite tent, an ultralight two-person tent with a hoop design and tapered body, I developed a two-person backpacking tent. Constructed with the same materials that we used in our Omnipotent, it was smaller and lighter. A single-wall tent, made from coated nylon ripstop and two fiberglass pole sets, it tapered sharply from front to back to reduce weight. Two differential vents would create airflow from back to front to eliminate or minimize interior condensation.

We pinned our hopes on this new design and christened it the Potent. We liked the name. After some brief prototype testing, we made a short production run of three and quickly sold them all. Within a couple of weeks, all three were back in our shop, having been returned by angry customers who complained of excessive condensation. The Potent was a total bust. Impotent. We reluctantly shelved the patterns and put that concept on the back burner, despondent with its failure.

Nicolai, Z-man, and I now huddled around Joe in Nicolai’s small back office, anticipating something which might be special. Without any flourish, Joe slowly opened his bulky briefcase and pulled out a large black-and-white photograph and a flimsy 6” square swatch of thin white plastic-like material, a membrane. Polytetrafluoroethylene, Joe explained, was a synthetic fluoropolymer of tetrafluoroethylene. PTFE is an inert material more commonly known by its DuPont trade name as Teflon. This material was no ordinary Teflon; it was their company’s proprietary Gore-Tex membrane, a sheet of expanded PTFE, with nine billion pores per square inch.

The founder’s son and lead engineer, Bob Gore, conceived a unique way of stretching the Teflon to create a porous membrane. Joe offered the photo, a photomicrograph. The microscopic view of the material showed an intricately interlaced system of fibers and nodes that constituted a semi-permeable membrane. The microscopic structure and hydrophobic chemical properties allowed for the passage of water vapor but not water droplets. Joe’s pitch was more than interesting. It was riveting. This material had functional properties that loudly shouted ‘Breakthrough Technology!’

After the theoretical explanation, we witnessed a physical demonstration that would change everything. Joe asked Nicolai if he could get a cup of hot coffee. Nicolai returned with a mug that was steaming with the hot beverage. Instead of hoisting the coffee mug up for a sip, Joe laid the thin white membrane over the opening at the top and secured it around the perimeter with a heavy rubber band.

Wisps of steam emerged from the hot coffee, rising through the membrane. Joe reached for the mug, held it up, and slowly turned it upside down. The coffee was trapped inside by the membrane, but not a droplet escaped. The steaming vapor continued to pour through even though the hot liquid coffee was in full contact with the interior surface of the membrane. Joe’s demonstration absolutely stunned us. Our jaws dropped. We looked at each other in silence, our eye communication speaking volumes. This semi-porous membrane had the technological magic we had been seeking. The road ahead now looked clear and bright. We had the material for our second act.

The membrane itself had little structural integrity. So, W.L. Gore laminated the membrane with a sandwich of 1.5 oz ripstop nylon on one side and a non-woven polyester scrim - they called it nexus - on the other. The fabrics and membrane were bonded together with thousands of tiny adhesive dots arrayed in a matrix pattern. The sandwich of materials was named the Gore-Tex laminate. It was the first application of the expanded PTFE in a fabric.

When Joe asked if we were interested in receiving some sample yardage, we all nodded a big ‘yes.’ Key people at many larger companies had all seen Joe’s pitch. Presumably, all were smart and none lazy. Had they passed? Or were they jumping on this new technology in a race to market? We did not know, and we couldn’t assume anything. We had to move. Right now!

I ordered fifteen yards, explaining we had prototype tent patterns that I could quickly adapt to test the new Gore-Tex laminate. We emphasized our will to act. As Joe left, I remember saying, “If this works, it could be big, really big.”

After counting the days, I tore open the end of the brown cardboard tube and pulled out the sample yardage from W.L. Gore. A bright yellow fabric with an orange cast emerged. We named the color Acapulco Gold. It signified the hue and also something powerful and desirable. I quickly unrolled the fabric onto the cutting table and laid out our new patterns. Anticipating the Gore-Tex fabric, I had already revised the old Potent patterns. I ditched the differential vents and made other changes to improve the tent and make it ready for the Gore-Tex laminate. 

We cut and sewed up three prototype tents and tested them in my backyard in Seattle’s Wallingford neighborhood. That night was perfect, damp and chilly. We crawled into our respective tents, zipped the doors shut, and spent the night in our sleeping bags. We awoke with the dawn without any noticeable condensation inside the tents, even though the outer shells of the tents were wet with water droplets. This first test encouraged us forward.

We now needed a name. We brainstormed in earnest, all wanting to be the author. Most names struck out. Z-man proposed the Light Dimension, and it stuck. Our new tent weighed three-and-a-half pounds, which was significantly lighter than the six- to eight-pound weights of the conventional 2-person A-frame backpacking tents. And it introduced a new dimension to the outdoor experience, one without annoying condensation inside the tent.

While we exhibited the Light Dimension at the Sunset Magazine Outdoor Show in Menlo Park earlier in the year, we effectively launched the Light Dimension to a larger audience with a direct marketing mailer on May 1, 1976. Since we already had a small mailing list, Z-man suggested augmenting it with rented subscriber lists from Off Belay and a few other outdoor magazines to target and pitch the performance attributes of our new product.

Z-man pulled out all the stops for our Light Dimension mailer. The mailing envelope featured a young parka-clad man smiling and holding a small bag in his extended hand. On the lower right of the envelope, a large bold type proclaimed,

“In this Bag is an Amazing New Tent. Its Weight? Just 3-1/2 lbs. Details Inside…”

Inside the envelope was an introductory letter, a product brochure, a $20 off coupon, a certificate with “Your Guarantee of Satisfaction,” an order form, and a pre-stamped business reply envelope. Ron included every element of the selling cycle. The letter had a handwritten message printed below the letterhead, “Special introductory offer – Try this amazing new 3-1/2 lb. tent at no risk and save $20.” The letter praised our Omnipotent and introduced the new ultralight Light Dimension and described the revolutionary new laminated fabric as “The Barrier that Breathes.”

The “Save $20” certificate looked a bit like currency. Its engraved image of Ben Franklin gazed past the typed message. Who wouldn’t trust Ben Franklin? There was a call to action that stated the offer expired at midnight on July 1, 1976. And if all that wasn’t enough, the opening statement inside the brochure announced in bold type,

“Introducing a New Dimension in Outdoor Pleasure…”

It sounded very intriguing and vaguely sexual. Was that intentional? Who knows? But who could resist?

And resist, they did not. Customers responded in droves. We soon had so many orders that we papered three walls of our tiny office with them. We mapped the dates of their backpacking plans onto a planning calendar. And with push pins, we rearranged their orders on our office wall to align manufacturing and fulfillment priorities. To hell with filling orders based on the sequential time of receipt. If we could help it, no customer order would go unfulfilled. And none did.


Fifty years ago, in May of 1976, our little company, Early Winters, created and introduced the world’s first Gore-Tex consumer product, the Light Dimension tent. It fulfilled a latent demand so strong that it propelled our fledgling enterprise from obscurity to overnight success. We soon introduced the world’s first Gore-Tex mountaineering shell garments in the spring of 1977. And the rest, as they say, is history. Footnote: Many of us still have them and use them today. The last photo is from a camp in the Mount Baker area, taken last year.


The Light Dimension

Workingman’s Dead rolled on the cassette player, the Grateful Dead cranking out an energetic version of “Uncle John’s Band.” Always one of ...

Beers in the Stream