The 311 Corner Bumper is the foundation of Carson Mfg Co.'s GSE safety bumper line. It is designed to protect aircraft from accidental damage from GS equipment. Carson also offers the 321 Straight Bumper, 311LS Tapered Corner Bumper, 311LSBP, 421 Flat Bumper and 441 End Bumper. All are molded of specially fornulated vinyl, with corrosion and abrasion resistsance, color that will not transfer and UV stabilizers to prevent discoloration and stiffening. The pneumatic structure design provides a soft protective cushion of air.