NDS Wear Backless Jock. Backless jock by NDS Wear in three great color to choose: Red, White or Black. Sizes Small through 4XL. Look hot in this backless jockstrap, soft fabric by NDS Wear, fabric 90% MicroPolyamide 10% Spandex. Sizing in inches Small 28"-30", Medium 32"-34", Large 35"-38", XL 39"-41", XXL 41-44 2XL add $2, XXXL - 3XL 45"-48"add $2, 4XL - XXXXL 49"-53" add $2, the 4XL would be a jock for the oversize male. By NDS Wear _