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A boxy vintage tee. A thick cotton made to be broken in and feel like a custom piece after many uses

This endlessly comfortable shirt will become a challenge to not throw on, day after day. Inspired by the classic rugby shirt, we added corduroy details on the chest pocket and collar to add textural detail and fabric variance.

Linen has been the choice for summer wear for hundreds of years, and for good reason. A light weight, breathable, and packable tee. A basic and trusted part of everyones wardrobe

A boxy vintage tee. A thick cotton made to be broken in and feel like a custom piece after many uses

“Milk casein” fiber was used in many garments and household items in America and Europe during the 1930s and ’40s. It’s made using a process that is similar to rayon/viscose (derived from wood pulp), but because it’s a regenerated protein fiber, it reacts like wool. Historically, it was used as a wool-alternative, advantaging soldiers on the front lines in times of wool scarcity. However, it fell out of use after WWII ended and newer, cheaper synthetics such as nylon grew in popularity. The cotton/milky fabric improves skin comfort, moisture absorption and is naturally antibacterial.

Carefully knitted in a soft blend of merino wool, cotton and nylon. It’s shaped to a classic silhouette with a rib turtleneck and finished off with classic ribbed trims at sleeves and bottom hem.

Designed with comfort and ease in mind, from adventures on the Savannah to picnics in the backyard. For hot days when breathability and lightweight freedom are a necessity.

Designed with comfort and ease in mind, from adventures on the Savannah to picnics in the backyard. For hot days when breathability and lightweight freedom are a necessity.

Reviving a 1930s innovation, the Formula Tee is made from a jersey that blends 50% organic cotton with 50% viscose milk casein. The protein-based fibre behaves like wool—soft, breathable and naturally antibacterial—delivering excellent skin comfort and moisture management for everyday wear. Finished with a ribbed collar, split side seams and the Amundsen Oslo tab on the right side. A clean, regular-fit staple for city days, travel and light adventure.

This cotton flannel shirt is an all-rounder for the everyday outdoor lifestyle

Constructed of Italian Fleece and French Corduroy, this piece serves as your softest companion in the long days and cool nights of Spring. Featuring our signature chest pocket, this fleece offers easy access to the tools and treasures essential in camp or on deck. Applied pockets, such as these, are inspired from the design of Roald Amundsen, who often retrofitted his gear in camp, as needed.

Constructed of Italian Fleece and French Corduroy, this piece serves as your softest companion in the long days and cool nights of Spring. Featuring our signature chest pocket, this fleece offers easy access to the tools and treasures essential in camp or on deck. Applied pockets, such as these, are inspired from the design of Roald Amundsen, who often retrofitted his gear in camp, as needed.

Performs-even-when-wet core warmth for hiking, climbing, touring, and living in. Description If you want the warmth of an Atom Hoody with a wider range of motion and smaller footprint, you’re in the right place. Pull on the Atom Vest when you feel the temperature dropping on longer hikes and climbs or wear it as a midlayer under a shell for touring and wet winter objectives. The Coreloft synthetic insulation stays warm even if you run into light weather, making it a better alternative to down for high-output days year round. What's been updated: Updated with a new FC0 material, FC0 DWR finish, and 100% recycled stretch synthetic insulation. New stretch insulation offers improved freedom of movement. The Bird logo is embroidered for long lasting visual. Features & Specs Technical features Moisture-resistant outer face fabric Breathable Lightweight Insulated Packable Construction Fortius™ Air 20 nylon liner is lightweight, breathable, and made with recycled content Stretch synthetic insulation is breathable, warm, and light, adds freedom of movement, and is made with recycled content Lightweight stretch Octa® Fleece side panels provide freedom of movement and improve ventilation Design & Fit Garment Centre Back Length: Size M is 28"/71cm - Varies by size Fabric treatment FC0 DWR (Durable Water Repellent) finish repels moisture and is PFAS-free Hem configuration Adjustable hem draw cord seals out drafts Patterning Ergonomic patterning construction for mobility and comfort Pocket configuration Two hand pockets with hidden zippers Sustainability Contains materials that meet the bluesign® criteria Contrast - recycled content Insulation - bluesign® approved material, recycled content Lining - dope dyed some colours, recycled content This article was treated with an anti-odour biocidal product (Polygiene) PFAS (Per- and polyfluoroalkyl substances) Compliant Size XS, S, M, L, XL, XXL Weight 195g / 6.9 oz Fit Fitted Sizing chart Men's sizing chart & fit guide - tops Activity Hike/Everyday Model X000009559 Manufacturing facility Youngone (CEPZ) LTD, Bangladesh Fit & Sizing Fit: Fitted Our trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over first layers or under outer layers. View size chart Materials & Care Materials Contrast: Octa Polyester Fleece, Raschel Anti-shed with 40D Delta Face, Polygiene, 122gsm - 100% Polyester Synthetic Insulation: Coreloft™ Stretch, 40gsm - 100% Polyester Lining: Recycled 20d nylon plain weave weft stretch FC0 DWR, 58gsm - 88% Nylon, 12% Elastane Body: Recycled 20d nylon plain weave weft stretch FC0 DWR, 58gsm - 88% Nylon, 12% Elastane Origin of fabric: TAIWAN Origin of dyeing: TAIWAN May release plastic microfibres into the environment when washing Care Machine wash gentle low Tumble dry gentle low Do not bleach Wash dark colours separately Do not dry clean Do not iron Do not use fabric softener Double rinse Do not wring

Engineered from a premium mini grid technowool blend of polyamide and wool, delivering superior moisture-wicking and antibacterial performance. The innovative fabric construction provides insulation against the cold whilst maintaining breathability in warmer conditions. Perfect for moderate to high-intensity mountain activities, whether worn as a standalone layer or beneath a shell for added versatility. Composition  56% Polyamide, 40% Wool, 4% Elastane Made in Lithuania Half zip construction Main fabric cuffs Mountain Airy patch on chest Mini grid technowool fabric        

Engineered for high-intensity training in cold conditions, this technical vest combines superior Primaloft insulation with premium British Millerain waxed cotton reinforcements for exceptional durability. The 4-way stretch panels enhance breathability and mobility, whilst the regular fit ensures seamless integration with the 5mila jacket system for optimal temperature regulation. Built from high-performance polyamide with elastane stretch, it's the perfect standalone layer for crisp training days or as insulation beneath a shell in harsher weather. Composition   94% Polyamide, 6% Elastane Insulation: 58% Recycled Polyester, 42% Polyester Made in Lithuania   New waxed cotton reinforcements with hexagon weave from British Millerain Primaloft insulation system Stretch panels for enhanced breathability Zipped hand pockets  

Engineered for high-intensity training in cold conditions, this technical vest combines superior Primaloft insulation with premium British Millerain waxed cotton reinforcements for exceptional durability. The 4-way stretch panels enhance breathability and mobility, whilst the regular fit ensures seamless integration with the 5mila jacket system for optimal temperature regulation. Built from high-performance polyamide with elastane stretch, it's the perfect standalone layer for crisp training days or as insulation beneath a shell in harsher weather. Composition   94% Polyamide, 6% Elastane Insulation: 58% Recycled Polyester, 42% Polyester Made in Lithuania   New waxed cotton reinforcements with hexagon weave from British Millerain Primaloft insulation system Stretch panels for enhanced breathability Zipped hand pockets  

Engineered from a premium mini grid technowool blend of polyamide and wool, delivering superior moisture-wicking and antibacterial performance. The innovative fabric construction provides insulation against the cold whilst maintaining breathability in warmer conditions. Perfect for moderate to high-intensity mountain activities, whether worn as a standalone layer or beneath a shell for added versatility. Composition  56% Polyamide, 40% Wool, 4% Elastane Made in Lithuania Half zip construction Main fabric cuffs Mountain Airy patch on chest Mini grid technowool fabric        

Engineered from a premium mini grid technowool blend of polyamide and wool, delivering superior moisture-wicking and antibacterial performance. The innovative fabric construction provides insulation against the cold whilst maintaining breathability in warmer conditions. Perfect for moderate to high-intensity mountain activities, whether worn as a standalone layer or beneath a shell for added versatility. Composition  56% Polyamide, 40% Wool, 4% Elastane Made in Lithuania Half zip construction Main fabric cuffs Mountain Airy patch on chest Mini grid technowool fabric