Kenneth Cole Boho Breeze Tie-Neck Tunic Swimsuit Cover Up 95% Rayon 5% Elastane SM: Pit to pit 21 inches, Length 32 inches. (S503) MED: Pit to pit 22 inches, Length 33 inches. (Pos-135) LG: Pit to pit 23 inches, Length 33 inches (Pos-136) XL: Pit to pit 24 inches, Length 34 inches. (S309)