Please look at the size chart below.
Sizes run VERY small.
If in doubt, please order a larger size. The singlets are made out of 'Coretech Mesh' which is a lightweight micro fibre mesh designed to enhance the air flow and moisture movement. The inner surface is lightly brushed to reduce abrasion and absorb persperation quickly while the outer surface features a modest 'hole' pattern for quick evaporation. The blue in the singlet was designed with this color.