Xterra Wetsuits Men's Surf Blacks Back Zip Full Suit Should fit snug, but not too tight 6 anatomically-correct arm/shoulder panels allow for a natural range of motion for a faster, smoother paddle with less effort Liquid Seam seal seams (double blind-stitched, taped and triple layer of glue) Microfleece technology on the inside of the suit radiates heat back onto your body for the warmest, lightest surf yet