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Thermaltrex Mokotla oa ho Robala by Tony and Lisa Clark

Thermaltrex Mokotla oa ho Robala by Tony and Lisa Clark is a highly esteemed winner of the very prestigious 2025 Moputso oa Silevera oa A' Design Award in Moralo wa Thepa ya ho Kampa le Thepa ya Kantle Competition Category.


SileveraThepa ya ho Kampa· 2025

Thermaltrex Mokotla oa ho Robala

by Tony and Lisa Clark

Client: Seasonfort

Moputso oa Silevera oa A' Design Award Winner in Thepa ya ho Kampa Category

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The Design

About Thermaltrex Mokotla oa ho Robala

Thermaltrex ke mokotla oa ho robala o hanyetsanang le mollo o etselitsoeng ho kh'ampa le tšebeliso ea kantle. Mokotla ona oa ho robala o entsoe ka lesela la polar fleece la 330gsm le hanyetsanang le mollo ka ho sa feleng, ntle le tšebeliso ea lik'hemik'hale kapa likoahelo. Lesela lena le ka hlatsuoa ka mochine, le ka sebelisoa hape, mebala ea lona ha e felisoe 'me le hanyetsana le hlobo, hape le fana ka tšireletso khahlanong le letsatsi. Likarolo tse peli li ka kopanngoa ka lizipi tse fetohang ho etsa mokotla oa ho robala oa batho ba babeli, 'me karolo e ka pele ea maoto e ka buloa e le hore mokotla o ka apesoa ha motho a ntse a tsamaea. Polokelo e fanoa ka mokotla o omileng oa lilithara tse tšeletseng o nang le mefeoloana e 'meli.

The Recognition

About the Moputso oa Silevera oa A' Design Award

Thermaltrex Mokotla oa ho Robala ke mohapi oa Moputso oa Silevera oa A' Design Award, kananelo e hlomphehang haholo e fuoang meralo e phahameng ka ho fetesisa, e ntle le e tsosang maikutlo. Bahapi ba Silevera ke mesebetsi e khanyang haholo le e nang le boqapi bo ikhethang e bontšang botsebi, talenta le bohlale ba baqapi ba eona. Thermaltrex Mokotla oa ho Robala e lebelletsoe ho ba mosebetsi o motle, oa mohlala, o nang le boprofeshenale bo bonahalang le mehopolo e mecha e tebileng. Moralo ona o hapileng Moputso oa Silevera oa A' Design Award ke mohopolo o hlokomelehang haholo le o ratoang o tlisang molemo mme o sutumelletsang meeli ea bonono, mahlale, moralo le theknoloji. Thermaltrex Mokotla oa ho Robala ke mosebetsi oo batho ba bangata ba o lakatsang, o tsosang litakatso, o tlisang maikutlo a matle le o tsosetsang ho makala le ho hlolla.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties
Our new Seasonfort Sleeping Bag is permanently Fire Retardant with no chemical treatments or coatings.

To do this we designed Thermaltrex, a warm 330gsm polar fleece machine washable recyclable fabric; which meets both the Faa 4 ply Airline Blanket and en71 2 Child Safety fire standards. Natural chemical safety allows it to pass the worlds toughest European chemical safety standard Reach, and is without formaldehyde or azoic dyes. It is colourfast, mildew resistant and offers upf50 sun protection.
Dimensions & Packaging
1kg rectangle sleeping bag is 190 x 79cm. Make a double size 190 x 159cm by zipping together 2 units. Silver reflective ropes to see in low light and pull Ykk reversible zips. Users can unzip the footend and walk around in warmth. Black nylon trim at head-end complements two woven labels, Seasonfort and ThermalTrex brands. Alongside is a green and blue ribbon denoting profits from sales assist Tony and Lisa Clark's homeless charity, Backpack Bed for Homeless. En13537 Sleeping Bag Celsius ratings, Extreme at 1C, Comfort at 15C. Stowed in multi-use 6L dry bag, one handle each end, digital logo print.
Tags
sleeping bag, fire, safety, fire retardant, Seasonfort, camping, textiles
Production Technology
Our not for profit social enterprise Seasonfort, founded by Tony & Lisa Clark, was created to help fund our life-saving Thermaltrex fire retardant polar fleece sleeping bags for homeless; 19,500 distributed to date.

To create our vision of safety - without any fire retardant chemicals - we made our new textile Thermaltrex to ensure every fibre was fire retardant, machine washable and recyclable.

Thermaltrex fabric is recyclable; shredded, de-polymerised, then repolymered again e.g. into PET plastic bottles or industrial plastic products.

In comparison to traditional polar fleece the cost difference is approximately 30 percent. A breakthrough for safety.
Design Challenge
Tony Clark initially was searching for a low cost way to make fire retardant sleeping bags for homeless people sleeping on the street.

For safety the fabric should not use chemicals.
The fabric must self extinguish a 1 inch flame for 12 seconds.
It must not use price prohibitive yarns or fibres e.g. Kevlar.
The fabric must be affordable for mass market safety.
Research
To reduce final production costs the material needed to be both synthetic and recyclable. This logically narrowed down the fibres and yarns that could be used. Next was to combine different materials and yarns at various ratios; which required a trial and error approach.

After each trial and error, materials would be tested in-house in various ways. Tests was grouped into 4 sets; fire, chemical, material and product. Upon success, all production would be tested at an independent lab test.
Inspiration
Street sleeping homeless need a fire retardant sleeping bag that could be washed.

Fire kills and injures. All campsites and outdoor fires often spit fire.

Today, sleeping bags are made of a polyester, nylon shell; which can easily ignite, spread fast and melt on the skin.

Sleeping bags are rarely washed, any sleeping bag that claims to be washable is usually damaged while washing; filling is damaged, clumps, creating uneven warmth and cold spots.
Project Duration
Product and fabric designer Tony Clark took 3 years to research, design and verify that Thermaltrex results could be repeated.

Thermaltrex polar fleece could not be made in Australia. Tony spent much time overseas. After much trial and error samples were made with various different textile mills; success finally happened.

Before independent test labs, major product testing occurred in Australia in-house lab.

With this knowledge, Tony could then apply theories into reality and final repeated success.
Operation Flow
Users of the Seasonfort Fire Retardant Sleeping Bag enjoy multiple functions.

Two units can be joined together to make a double sleeping bag.

The Ykk reversible rail zips also allows users to open the foot end of the sleeping bag and walk around wherever they are; cozy and warm.

Instead of a typical drawstring stow bag, the Seasonfort Sleeping Bag is stored in a 6L dry bag with two handles. An additional functional dry bag is handy when camping. The sleeping bag does not need to be carefully rolled to be re-packed into the dry bag; instead it can be stuffed back in quickly without hassle.
Patents
Seasonfort and Thermaltrex are registered word marks and trademarked in major jurisdictions globally.
Team Members
Textile designer of Thermaltrex: Tony Clark
Sleeping bag designers: Tony Clark and Lisa Clark
Dry bag designers: Tony Clark and Lisa Clark
Founders of not for profit social enterprise Seasonfort and Thermaltrex: Tony and Lisa Clark
Founder of homeless not for profit charity - Backpack Bed for Homeless: Tony Clark
Image Credits
Seasonfort video and photos in-house.

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