The Sparco Delta RW-6 line of undergarments are designed to provide both comfort and protection. The Delta RW-6 is made from a unique mixture of very comfortable soft fibers. The Delta RW-6 features woven mesh into key areas to enhance breathability. Sparco Delta RW-6 undershirts are made with seamless sides, ribbed neck band, and relocated Raqlan sleeves all to enhance comfort. The Delta RW-6 undershirt also features differentiated mesh structure providing better comfort and enhance breathability in different specific areas. Sparco Delta RW-6 undershirts and underpants are designed to fit close to the body due to the soft stretchable fabric. If you prefer a loose-fit please choose one size up. FIA 8856-2000 Approved. Available in white only. Combination Sizes: XS/S, M/L, XL/XXL. Unique blend of soft fibers for comfort, Seamless sides, Differentiated mesh panels inserts, Ribbed neck collar, Raglan sleeves, FIA 8856-2000 Approved.