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Do not dry clean or use solvents to remove stains

Max. ironing temperature (110° C) Take care when steam ironing

Machine wash on synthetics / permanent press cycle (max. 30° C)

Close The Loop – Join in and help Mammut make mountaineering more sustainable with a long sleeve 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% 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.

Close the Loop 2.0 Longsleeve Men

Long sleeve shirt made from regenerated nylon

Fair Wear works to ensure fair and safe working conditions in garment factories. The non-profit engages directly with factories, trade unions, NGOs and governments to protect workers’ rights.

Fair Wear

This product contains recycled materials with uncompromised performance and functionality. Choosing recycled materials reduces the use of virgin resources and helps promote a more circular economy.

Recycled

HeiQ Pure

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Shipping & Returns

Delivery

Orders are dispatched within two working days (Mon-Fri). Depending on the delivery country the delivery lead time is generally 3-5 business days.

Free shipping from 50 EUR

Shipping is free for purchases from NOK 500. For orders below this purchase value, shipping costs of NOK 99 will be applied.

Free shipping from NOK 500

Return period

We offer returns within 30 days for full-price items and 14 days for sale items.