Product description

. Contoured Closed-Cell(C3) Foam Technology provides increased cushioning and force dispersion. Polycanvas sleeve increases durability. Ultra durable Nevatear shell, fillingstuffed with natural and synthetic fibers blended with sifted sand. Double-end attachment..

Amazon.com

The C3 Foam 100-Pound Heavy Bag from Everlast is built and designed to provide professional level training for boxers and a great workout for all athletes who box for fitness. The C3 (Contoured Closed Cell Foam Technology) is designed to provide the increased cushioning, support, and force dispersion that serious hitters need during heavy workouts. The high density foam's closed-cells also inhibit moisture transfer into the foam padding to keep your gloves lighter and drier during use. Meanwhile, the bag's custom filling of natural and synthetic fibers blended with sifted sand, offers a homogenous feel and resilient shock absorption. Encased within a durable polycanvas shell, the C3 Heavy Bag is built to last. The bag is equipped with a durable webbing system for safety that includes heavy-duty nylon straps and double end loops for solid anchoring.