Gift Wrap Selection

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Cool Muscle Tee


Boob sweat be-gone! The Cool Muscle Tee is made from our signature soft Pima cotton, infused with tech designed to help moisture evaporate quickly, so sweaty sleepwear can be a thing of the past. Pair this with the Cool Short or the Cool Pant for a look that’s designed to chill… Just add Netflix.

  • Underarm “boob catcher”—no nip-slips happening here
  • Ribbed trim at the neck
  • Rounded high/low hem for extra coverage
  • Great for hot sleepers
  • Machine wash cold + lay flat to dry
  • Our Cool Fabric is made from a blend of Pima cotton and yarns infused with a TransDRY™ and XT2 silver. More on our Cool fabric HERE 



Emi is featured wearing the white, brisk and black colorways in size extra small.  She is 5’9” with a 32 bust, a 24” waist and 35” hips.

Kim is featured wearing the Eclipse and Dawn colorways in size extra small. She is 5'11 with a 32" bust, a 24" waist, and 36" hips.

Emily is featured wearing the Bare colorway in size extra small. She is 5'4 with a 35” bust, a 29” waist, and 39” hips.

Unsure of your size? No need to lose sleep over it - we are here to help! To ensure proper fit, please refer to the fit guide below and if you have any questions, please feel free to email us at We are happy to guide you!

Size XS S M L XL
Numerical 0 2-4 6-8 10-12 14
Bust 32-33 34-35 36-37 38-39 40-41
Waist 26 27-28 29-30 31-32 33-34
Hip 36 37-38 39-40 41-42 43-44
Inseam 29.5 30 30.5 31 31

Measurements are in inches and refer to body size, not garment dimensions. Please note that fits may vary by style and personal preference.

Need help with your size? Have a suggestion or feedback?

Lunya gladly accepts exchanges and free returns of unworn/unwashed items with the original tags attached within 30 days of your order ship date. Underwear, Gift Cards, & Sale Items are nonrefundable. Please visit our automated ONLINE RETURN PORTAL or email our customer happiness team at to initiate an exchange/return or with any further questions. THX!