SURGE TANK
Final Sale
Unit price / per













































Sustainable
Materials
Free Shipping
over $75
SURGE TANK
Final Sale
Unit price / perSustainable
Materials
Free Shipping
over $75
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A classic with a twist. Our Surge Tank is designed for maximum comfort—a slightly roomier fit, a back vent to keep you cool, and 37.5° technology that helps regulate your body temperature. Stay cool on the move—and look great doing it.
Sale items are FINAL SALE
PRODUCT FEATURES
PRODUCT FEATURES
- Athletic fit
- Reflective “4” signature logo on back
CARE
CARE
- Machine Wash Cold With Like Colors
- Do Not Bleach
- Do Not Use Softener
- Tumble Dry Low
- Iron Low
- Do Not Dry Clean
FABRIC DETAILS
FABRIC DETAILS
- 56% Modal, 37% (37.5 Nylon), 7% Spandex























A classic with a twist. Our Surge Tank is designed for maximum comfort—a slightly roomier fit, a back vent to keep you cool, and 37.5° technology that helps regulate your body temperature. Stay cool on the move—and look great doing it.
Sale items are FINAL SALE
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37.5® PERFORMANCE ENHANCING MATERIALS
37.5® Technology helps keep your body at the ideal core temperature of 37.5° C. It’s scientifically proven to increase stamina by reducing the amount of energy used to manage your core temperature.