For race and training wear, singlets are one of the most popular triathlon garments. All singletsare created with a 3/4 length zipper, which gives you more options on how to use the jersey. Can be easily worn under a wetsuit in cold day races, and worn in the swim. Also a great training garment for hot days. Sides are a mesh panel construction, with elastic closures on the top to make sure your gear is still there where you need it. Positioning on the sides allows easier access, and snug fit ensures nothing moves while you are running. With a shoulder cut for protection and comfort, this IS your second skin for any race.