• 100% Ultraflex Durable Stretch Neo

• .5mm Long Sleeve Shirt

• Strategic Seamless Paddle Zones

• Nylon Two Sided Neoprene

Thinskins is O'Neill's performance series designed to protect against wind chill, UV exposure, and wax irritation in warm to tropical conditions. The 0.5MM neoprene insulation throughout provides core warmth and rib protection while the super-stretchy material allows for freedom of movement for swimming, surfing, paddling, and more.Features:100% Ultraflex DS offers superior stretch Strategic seamless paddle zones under the arms combined with flatloc stitching mean breathable seams and reduced chafing with extended use Unfinished sleeve cuffs are more comfortable than hemmed sleeves, and allow a better water seal Perfect to pair with boardshorts or a pair of neoprene shorts; can also be used to layer underneath a wetsuit for more versatility Boardshort connector loop and cinch system on lower hem means the shirt stays in place in active watersports Maximum UV protection - neoprene blocks the suns rays Choose your size from the chart on the Size Tab. Note: These shirts are designed to fit very snugly in order to insulate well. If in between sizes, choose the larger size, or order both & return the one that does not fit.