• Heiq pure
  • Main material100% Polyamide
  • 1017-09848

  • Cut

    Regular Fit

  • Quick-drying and breathable
  • Made in Europe
  • Made from 100% ECONYL® regenerated nylon
  • Treated with HeiQ Pure TAG - an antimicrobial technology that lastingly inhibits unpleasant odors
  • Very comfortable to wear thanks to 3D fabric structure
  • Increased comfort through offset shoulder seams to avoid pressure points under backpack
  • Decorative print in "Close The Loop" design on the front and back
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    Fair Wear

    Mammut strives to ensure fair and safe working conditions in all factories making its products. To systematically improve working conditions throughout its supply chain, Mammut was the first outdoor brand to join the Fair Wear Foundation.

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    Recycled

T-shirt
made
from
ECONYL®
regenerated
nylon

Close The Loop – Join in and help Mammut make mountaineering more sustainable with a T-shirt we’ve made entirely from reprocessed waste. The Close The Loop functional T-shirt is 100% ECONYL® regenerated nylon. Some of the material comes from old climbing ropes collected by Mammut at select climbing gyms and stores. The Close The Loop T-shirt is lightweight, functional and perfect for outdoor activities all year round. It dries in no time and has a 3D material structure that makes it extra comfortable on your skin. Offset seams prevent uncomfortable pressure when carrying a backpack. To reduce unpleasant odors, the T-shirt is treated with HeiQ Pure technology developed in Switzerland. This helps conserve resources since less washing is required. And because it’s made of 100% ECONYL® regenerated nylon, the material can be reused over and over again – closing the loop. The T-shirt was developed by Mammut in collaboration with the non-profit organization Protect Our Winters Switzerland.