Lululemon Rest Less Cropped 1/2 Zip size 8. Half zip is in excellent condition. ~16 pit to pit, ~18.5 long. Powered by seamless technology, this cozy, sweat-wicking layer was designed to be worn under your raincoat on wet commutes or under your ski jacket when hitting the slopes. Seamless construction minimizes chafing Fabric is sweat-wicking and four-way stretch features Designed for: Training Thumbholes: Thumbholes help keep your sleeves down for easy layering Zipper garage: Helps protect your chin from uncomfortable chafe Fit: Slim fit, waist length