SYMBIO® MERINO BASE LAYERS

MERINO, SWISS-ENGINEERED

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ENERGY ACCUMULATOR® BASE LAYER 

ENGINEERED TO OWN THE COLD

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Build Your Base Layer, Save 20%

Find the base layer technology that fits your goals. Pair top and pants for maximum performance – and 20% off.

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Heatloop®

Maximum warmth.

Temperature Range

-25°C +5°C

Best For

Skiing – Winter hiking – Snowshoeing

Fit

Compressive Fit Close Fit Regular Fit
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Energy Accumulator®

Pro-level thermoregulation.

Temperature Range

-25°C +5°C

Best For

Ski racing – Skiing – Fast ski-touring

Fit

Compressive Fit Close Fit Regular Fit
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Symbio® Merino

Soft skin-feel.

Temperature Range

-25°C +5°C

Best For

Skiing – Snowboarding – All-day wear

Fit

Compressive Fit Close Fit Regular Fit
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Mightywool® Merino

Merino, but stronger.

Temperature Range

-25°C +5°C

Best For

Skiing – Snowboarding – Winter hiking

Fit

Compressive Fit Close Fit Regular Fit
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FIND YOUR IDEAL BASE LAYER

Answer a few short questions for our recommendation. 

SALE UP TO 30% OFF

FURTHER MARKDOWNS ADDED

SHOP MEN'SSHOP WOMEN'S

End of Season Sale

BLACK/CHARCOAL
ba5e76ea-ef06-4083-a59e-47caa99ef42b___ba5e76ea-ef06-4083-a59e-47caa99ef42b,TW-RTA2S24M-B036,TW-RTA2S24M-B036,dam,#color_black-charcoal
 BLAZING ORANGE/ARCTIC WHITE
b3e75bd4-8536-4de3-b4e8-6d6dec60fc97___b3e75bd4-8536-4de3-b4e8-6d6dec60fc97,TW-RTA2S24M-O071,TW-RTA2S24M-O071,dam,#color_blazing-orange-arctic-white
 MINERAL BLUE/ORANGE
741a9e61-259b-4ed2-a552-fcfcac9fe44c___741a9e61-259b-4ed2-a552-fcfcac9fe44c,TW-RTA2S24M-A014,TW-RTA2S24M-A014,dam,#color_mineral-blue-orange
 SLATE BLUE/X BLACK
532bd481-430d-452a-bdf9-72770f55d912___9a6c186f-3453-4acf-b80a-66f789f2a4ff,TW-RTA2S24M-A132,TW-RTA2S24M-A132,dam,#color_slate-blue-x-black
TWYCE RUN SHIRT SS MEN
Men - Running - T-Shirts
From € 84,00 € 120,00
BLACK/CHARCOAL
1afb78b7-53c0-481b-a7bc-a210582d378b___1afb78b7-53c0-481b-a7bc-a210582d378b,TW-R500S24M-B036,TW-R500S24M-B036,dam,#color_black-charcoal
 BLUEPRINT/ORANGE
b0091292-9af3-4dd5-9429-3d6a521de7c1___b0091292-9af3-4dd5-9429-3d6a521de7c1,TW-R500S24M-A012,TW-R500S24M-A012,dam,#color_blueprint-orange
 BLACK/RED
65de22ab-0cbf-4c99-96a5-8e17a603029f___65de22ab-0cbf-4c99-96a5-8e17a603029f,TW-R500S24M-B102,TW-R500S24M-B102,dam,#color_black-red
 X BLACK/SLATE BLUE
cbef75e5-07e4-407a-984e-c8c47cc2c9f1___cbef75e5-07e4-407a-984e-c8c47cc2c9f1,TW-R500S24M-B131,TW-R500S24M-B131,dam,#color_x-black-slate-blue
TWYCE RACE 2in1 SHORTS MEN
Men - Running - 2-in-1 Shorts
€ 105,00 € 150,00
HEATMAP
841d00d8-3d88-4927-af20-b0fb0df8e6c4___841d00d8-3d88-4927-af20-b0fb0df8e6c4,CF-BT28S23M-O001,CF-BT28S23M-O001,dam,#color_heatmap
 OPAL BLACK
c11c01d2-a5ed-4e97-83c4-ceda4646deb7___c11c01d2-a5ed-4e97-83c4-ceda4646deb7,CF-BT28S23M-B001,CF-BT28S23M-B001,dam,#color_opal-black
 MINERAL BLUE
2d72df17-7471-49d3-84a0-1da115f633f6___2d72df17-7471-49d3-84a0-1da115f633f6,CF-BT28S23M-A013,CF-BT28S23M-A013,dam,#color_mineral-blue
 DARK MONOCHROMATIC HEATMAP
065d45fd-b061-4b44-a1ef-331e28263ee2___065d45fd-b061-4b44-a1ef-331e28263ee2,CF-BT28S23M-P122,CF-BT28S23M-P122,dam,#color_dark-monochromatic-heatmap
COREFUSION AERO JERSEY SS MEN
Men - Cycling - Jerseys
€ 133,00 € 190,00
OPAL BLACK
8ac842c7-4810-4f2f-8922-7aea18f2ef3f___8ac842c7-4810-4f2f-8922-7aea18f2ef3f,CF-BB28S23M-B001,CF-BB28S23M-B001,dam,#color_opal-black
COREFUSION BIB SHORTS MEN
Men - Cycling - Bibs
€ 175,00 € 250,00
ARCTIC WHITE/PEARL GREY
4835e92f-17f5-4a6f-9c8c-55632d6d3b3e___4835e92f-17f5-4a6f-9c8c-55632d6d3b3e,XS-YQCNS24U-W002,XS-YQCNS24U-W002,dam,#color_arctic-white-pearl-grey
 BLACK/CHARCOAL
ff623107-d6bb-4d48-9527-65bc270a54c7___ff623107-d6bb-4d48-9527-65bc270a54c7,XS-YQCNS24U-B036,XS-YQCNS24U-B036,dam,#color_black-charcoal
 MEDIUM GREY
21d06023-f6c8-4b1d-ac77-8a36f51d2a42___21d06023-f6c8-4b1d-ac77-8a36f51d2a42,XS-YQCNS24U-G229,XS-YQCNS24U-G229,dam,#color_medium-grey
CORE NATURAL CREW
Unisex - Multisport - Crew - Socks
From € 14,00 € 20,00
BRIGHT LAVENDER/WHITE
8d03d79f-8494-4283-b7ed-44b0b85215d6___8d03d79f-8494-4283-b7ed-44b0b85215d6,NG-FT14W20W-P028,NG-FT14W20W-P028,dam,#color_bright-lavender-white
 BLACK/WHITE
643fe19f-63b5-43fc-8c98-1ed59d634ba8___643fe19f-63b5-43fc-8c98-1ed59d634ba8,NG-FT14W20W-B119,NG-FT14W20W-B119,dam,#color_black-white
ENERGIZER 4.0 FITNESS CROP TOP WMN
Women - Training - Tops
€ 70,00 € 100,00
X BLACK/NEO PINK
de7d73ce-29de-438e-aca2-cf6e39b7a408___de7d73ce-29de-438e-aca2-cf6e39b7a408,EF-R520S25M-B133,EF-R520S25M-B133,dam,#color_x-black-neo-pink
 X BLACK/X BLACK
b3e6067c-6b57-4630-a4ba-9c9091837eaf___b3e6067c-6b57-4630-a4ba-9c9091837eaf,EF-R520S25M-B132,EF-R520S25M-B132,dam,#color_x-black-x-black
EFFEKTOR 2IN1 SHORTS MEN
Men - Running - 2-in-1 Shorts
€ 112,00 € 160,00
X BLACK/RHINO GREY
76cf2788-10ed-4682-930f-6ab9ccb6f897___76cf2788-10ed-4682-930f-6ab9ccb6f897,CX-B5LIS25M-B130,CX-B5LIS25M-B130,dam,#color_x-black-rhino-grey
XCEED RIDE LINER SHORTS MEN
Men - Cycling - Shorts
€ 70,00 € 100,00
RHINO GREY
be90e86b-3cfc-4d3a-8c24-cb68ee0fe594___52627e13-8071-4464-9b20-2ae3afb76b96,XE-YPX4W24U-G810,XE-YPX4W24U-G810,dam,#color_rhino-grey
 X BLACK
ac18f9f4-764f-4d6b-aaa7-adfd982f26bf___ac18f9f4-764f-4d6b-aaa7-adfd982f26bf,XE-YPX4W24U-B120,XE-YPX4W24U-B120,dam,#color_x-black
X-ENTIAL PANTS
Unisex - Multisport - Pants
€ 105,00 € 150,00
BLOSSOM BLUE/BLACK
2f2d0a73-b696-4725-8f25-4202c6fbecec___2f2d0a73-b696-4725-8f25-4202c6fbecec,IN-YT00S19M-A101,IN-YT00S19M-A101,dam,#color_blossom-blue-black
 OPAL BLACK/ARCTIC WHITE
af78b53b-96bb-4d41-a0ed-e2ee8112899e___af78b53b-96bb-4d41-a0ed-e2ee8112899e,IN-YT00S19M-B002,IN-YT00S19M-B002,dam,#color_opal-black-arctic-white
 BLUESTONE/ANTHRACITE
#color_bluestone-anthracite
 ARCTIC WHITE/DOLOMITE GREY
b016fbde-4fa3-4532-843c-809b767f4501___b016fbde-4fa3-4532-843c-809b767f4501,IN-YT00S19M-W008,IN-YT00S19M-W008,dam,#color_arctic-white-dolomite-grey
INVENT 4.0 LT SHIRT SH SL MEN
Men - Multisport - Base layer
From € 49,00 € 69,00
OPAL BLACK/ARCTIC WHITE
103eeb5a-4db5-4d33-91b8-e60786fd9ef3___103eeb5a-4db5-4d33-91b8-e60786fd9ef3,IN-Y000S19M-B002,IN-Y000S19M-B002,dam,#color_opal-black-arctic-white
 ARCTIC WHITE/OPAL BLACK
495c2578-520e-4e63-b32e-903e01bd22e3___495c2578-520e-4e63-b32e-903e01bd22e3,IN-Y000S19M-W003,IN-Y000S19M-W003,dam,#color_arctic-white-opal-black
INVENT 4.0 LT BOXER SHORTS MEN
Men - Multisport - Underwear
€ 36,00 € 45,00
OPAL BLACK/ARCTIC WHITE
d3b9c01d-495e-42a3-8c05-4cfd0d19f92a___d3b9c01d-495e-42a3-8c05-4cfd0d19f92a,IN-YT01S19M-B002,IN-YT01S19M-B002,dam,#color_opal-black-arctic-white
 ARCTIC WHITE/OPAL BLACK
491bb38e-86a0-4e3a-b177-23881ad97408___491bb38e-86a0-4e3a-b177-23881ad97408,IN-YT01S19M-W003,IN-YT01S19M-W003,dam,#color_arctic-white-opal-black
INVENT 4.0 LT SINGLET MEN
Men - Multisport - Base layer
€ 48,00 € 60,00
OPAL BLACK/ARCTIC WHITE
02e42826-d6fb-4291-8f2f-547bbf4055ad___02e42826-d6fb-4291-8f2f-547bbf4055ad,NG-Y000S19M-B002,NG-Y000S19M-B002,dam,#color_opal-black-arctic-white
 ARCTIC WHITE/DOLOMITE GREY
old,#color_arctic-white-dolomite-grey
ENERGIZER 4.0 LT BOXER SHORTS MEN
Men - Multisport - Underwear
From € 42,00 € 55,00
X BLACK/GREY
e2e1b088-19d2-45fe-b793-ed9cd181d918___e2e1b088-19d2-45fe-b793-ed9cd181d918,XS-WYDMW24U-B034,XS-WYDMW24U-B034,dam,#color_x-black-grey
 MUTED LAVENDER/LIGHT SAND
cce0b585-36ef-4088-b219-9163efb5711c___cce0b585-36ef-4088-b219-9163efb5711c,XS-WYDMW24U-P095,XS-WYDMW24U-P095,dam,#color_muted-lavender-light-sand
 SEAL GREY/LIGHT SAND
4e8db88d-fa04-4297-8442-1499d9fcb825___4e8db88d-fa04-4297-8442-1499d9fcb825,XS-WYDMW24U-G701,XS-WYDMW24U-G701,dam,#color_seal-grey-light-sand
 SAND/DARK SAND
d94ced33-ebbd-4879-bb10-8e4f27a0d99d___d94ced33-ebbd-4879-bb10-8e4f27a0d99d,XS-WYDMW24U-M101,XS-WYDMW24U-M101,dam,#color_sand-dark-sand
SKI DISCOVER MERINO OTC
Unisex - Wintersports - Over The Calf - Socks
From € 24,50 € 35,00
GOLD/BLACK
ed00e525-789f-498f-ab69-2734028250b8___ed00e525-789f-498f-ab69-2734028250b8,XS-SSXXW19U-S001,XS-SSXXW19U-S001,dam,#color_gold-black
HELIXX GOLD 4.0
Unisex - Wintersports - Over The Calf - Socks
€ 44,00 € 55,00
MIDNIGHT BLUE/ARCTIC WHITE
321fa472-110d-4190-8d0d-cb41ff98b162___321fa472-110d-4190-8d0d-cb41ff98b162,XS-TS04S19U-A041,XS-TS04S19U-A041,dam,#color_midnight-blue-arctic-white
 LAKE BLUE MELANGE/DOLOMITE GREY
19b055b3-35f8-4621-8642-a32682962a47___19b055b3-35f8-4621-8642-a32682962a47,XS-TS04S19U-A053,XS-TS04S19U-A053,dam,#color_lake-blue-melange-dolomite-grey
 CHARCOAL MAIS MELANGE/GREY/BLACK
4beb3c88-e5fb-4696-9ca3-b465d766e6ab___4beb3c88-e5fb-4696-9ca3-b465d766e6ab,XS-TS04S19U-G194,XS-TS04S19U-G194,dam,#color_charcoal-mais-melange-grey-black
 GREY DUO MELANGE/X-ORANGE/BLACK
f7ffd41c-bdaa-4e1a-a13a-f4b135181e52___f7ffd41c-bdaa-4e1a-a13a-f4b135181e52,XS-TS04S19U-G195,XS-TS04S19U-G195,dam,#color_grey-duo-melange-x-orange-black
TREK X MERINO
Unisex - Outdoor - Crew - Socks
From € 25,00 € 38,00
OPAL BLACK/ARCTIC WHITE
b67bfc4c-a368-47b3-973b-077ed37f717e___b67bfc4c-a368-47b3-973b-077ed37f717e,IN-YT01S19W-B002,IN-YT01S19W-B002,dam,#color_opal-black-arctic-white
 ARCTIC WHITE/DOLOMITE GREY
c048f285-b58c-4855-840c-4f66e5ca4b79___c048f285-b58c-4855-840c-4f66e5ca4b79,IN-YT01S19W-W008,IN-YT01S19W-W008,dam,#color_arctic-white-dolomite-grey
 WINSOME ORCHID/OPAL BLACK
#color_winsome-orchid-opal-black
INVENT 4.0 LT SINGLET WMN
Women - Multisport - Base layer
From € 39,00 € 59,00
BLACK/CHARCOAL
fe531691-cccd-43a7-86a0-dad4355476ac___fe531691-cccd-43a7-86a0-dad4355476ac,XS-R7XPS24M-B036,XS-R7XPS24M-B036,dam,#color_black-charcoal
 WHITE/ORANGE/TWYCE BLUE
d23dd900-cac0-446b-9f80-82e1cf9cc76e___d23dd900-cac0-446b-9f80-82e1cf9cc76e,XS-R7XPS24M-W072,XS-R7XPS24M-W072,dam,#color_white-orange-twyce-blue
 FLUO PINK/X BLACK
aa4efc1d-2725-48ed-b456-5caee7d27b04___6c3f8d9f-2385-42b5-a012-1f0265315d26,XS-R7XPS24M-P140,XS-R7XPS24M-P140,dam,#color_fluo-pink-x-black
RUN EXPERT ANKLE
Unisex - Running - Ankle - Socks
€ 21,00 € 30,00
DUNE RED/ORANGE
1220335d-99f3-4b1c-921e-89e90d5004ba___1220335d-99f3-4b1c-921e-89e90d5004ba,XS-WYPPW24U-R301,XS-WYPPW24U-R301,dam,#color_dune-red-orange
 MARINE/MINERAL BLUE
802ef53e-8774-42ff-82d2-c5cf07c691c7___802ef53e-8774-42ff-82d2-c5cf07c691c7,XS-WYPPW24U-A099,XS-WYPPW24U-A099,dam,#color_marine-mineral-blue
 LIGHT PINK/LIGHT SAND
1469d10c-38ab-43fd-b737-9cb66741dde6___1469d10c-38ab-43fd-b737-9cb66741dde6,XS-WYPPW24U-P077,XS-WYPPW24U-P077,dam,#color_light-pink-light-sand
 X BLACK/LIGHT GREY
79c85aa6-21fd-4df1-bddc-e582b7d6d1b4___79c85aa6-21fd-4df1-bddc-e582b7d6d1b4,XS-WYPPW24U-B121,XS-WYPPW24U-B121,dam,#color_x-black-light-grey
 X WHITE
de56770e-e528-4e19-8bab-e7c534fff10b___de56770e-e528-4e19-8bab-e7c534fff10b,XS-WYPPW24U-W300,XS-WYPPW24U-W300,dam,#color_x-white
+ 1 more
SKI PERFORM OTC
Unisex - Wintersports - Over The Calf - Socks
From € 24,50 € 35,00
X BLACK/GREY
26a966ec-3219-4a69-b454-3f11f74bd38e___26a966ec-3219-4a69-b454-3f11f74bd38e,XS-WYPMW24U-B034,XS-WYPMW24U-B034,dam,#color_x-black-grey
 MUTED LAVENDER/LIGHT SAND
cb0fad89-f675-4dcc-9de1-fc8242174ff4___cb0fad89-f675-4dcc-9de1-fc8242174ff4,XS-WYPMW24U-P095,XS-WYPMW24U-P095,dam,#color_muted-lavender-light-sand
 SEAL GREY/LIGHT SAND
136795e7-9180-4390-ac82-4eedec7f3f1a___136795e7-9180-4390-ac82-4eedec7f3f1a,XS-WYPMW24U-G701,XS-WYPMW24U-G701,dam,#color_seal-grey-light-sand
 ETERNAL ICE
4f966576-ee69-4a46-923e-8bfa3200dadf___4f966576-ee69-4a46-923e-8bfa3200dadf,XS-WYPMW24U-A070,XS-WYPMW24U-A070,dam,#color_eternal-ice
 SAND
543ab3e0-40e9-4954-9b6a-dffd14a9030f___543ab3e0-40e9-4954-9b6a-dffd14a9030f,XS-WYPMW24U-M100,XS-WYPMW24U-M100,dam,#color_sand
+ 1 more
SKI PERFORM MERINO OTC
Unisex - Wintersports - Over The Calf - Socks
From € 31,50 € 45,00

Meet our athletes

Marco Odermatt

Olympic Champion, 2022 | Four-time World Champion

Núria Picas

UTMB Winner & 5x Ultra Pirineu

Thibault Marquet

UTMB TDS Winner

Swiss National Ski Team

Olympic Champions

Fanny Smith

2x Olympic Bronze & 3x World Champion

Thömus Maxon Swiss Mountain Bike Racing

MTB World Cup Wins

Chrigel Maurer

6x Red Bull X-Alps Champion

SWISS ENGINEERED

We Take Inspiration from nature's ingenuity.