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Rukka Outlast T-Shirt

Outlast phase changing material makes Rukka's Outlast T-Shirt capable of keeping you comfortable in a variety of climates. It's the base layer to rule them all. 

Energy from your warm body or rising ambient temperatures causes Outlast thermocules to change from a solid to liquid giving a sense of thermal equilibrium.

When you begin to cool down, Outlast thermocules begin to change back from a liquid to a solid. In this phase change, the energy that was absorbed by the thermocules while you were active is returned to you. 

Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Black / SM RevZilla Item #1758050 Store Sku MFR. Product #70381-779-990-SM AvailabilityOnly 2 Left: Ships within 24 hours
Product Style Black / MD RevZilla Item #1758051 Store Sku MFR. Product #70381-779-990-MD AvailabilityIn Stock: Ships within 24 hours
Product Style Black / LG RevZilla Item #1758052 Store Sku MFR. Product #70381-779-990-LG AvailabilityOnly 3 Left: Ships within 24 hours
Product Style Black / XL RevZilla Item #1758053 Store Sku MFR. Product #70381-779-990-XL AvailabilityIn Stock: Ships within 24 hours
Product Style Black / 2XL RevZilla Item #1758054 Store Sku MFR. Product #70381-779-990-2XL AvailabilityIn Stock: Ships within 24 hours
Product Style Black / 3XL RevZilla Item #1758055 Store Sku MFR. Product #70381-779-990-3XL AvailabilityIn Stock: Ships within 24 hours

Rukka Men's Base & Mid Layer Sizing

Size Chest (cm) Waist (cm) Hips (cm)
SM 90-93 78-81 94-97
MD 94-101 82-89 98-105
LG 102-109 90-97 106-113
XL 110-117 98-107 114-121
2XL 118-123 108-117 122-129
3XL 124-133 118-127 130-137

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • C Chest
    Measure around the fullest part of your chest, under the armpits, keeping the measuring tape parallel to the ground.
  • W Waist
    Measure around your natural waistline, around the top of the hip bones, inline with the navel while keeping the measuring tape parallel to the ground.
  • HP Hips
    Measure the circumference, from pelvic bone to pelvic bone, at the widest part of your hips below the waist.
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