The Rival Mark-I 80lbs Heavy Bag, is a bright fresh design made to last for years of performance. Inspired by old tank names "MARK-I" brings a modern touch to an essential item of your boxing workout- the heavy bag. By changing the shape of a traditional heavy bag, the increase width vs height ratio maximizes the efficiency of your workout. Weight: 80lbs / 36kg Dimensions: 48" x 14" / 122cm x 36cm Material: Ultra-Resistant Engineered Microfiber Features: Pre-Filled Recycled Shredded Material; Zipper Attachment to Add or Remove Material; Liner & EVA Padding; Reinforced Four Rivet Attachment; 4 Individual Chains Included (Approx. 19.5"/50cm combined length.); Carabiner Attachment; Printed Rival Graphics; Embossed Rival Patches.