Heavy bags are a training staple. Durability is a necessity. The UFC standard heavy bag is no exception. This bag is designed to withstand long, daily intense training sessions. Made from super thought, ultra-durable pcv exterior and reinforced at every seam - you can rely on this bag for a long time. Strong enough for gym use, but economically priced for home use, look no further. This bag is what you need. Available in 70 lbs. Or 100 lbs.