The World&';s Highest Quality Sandbag, Guaranteed For Life We added additional bartacks and significantly upgraded the Filler Bag to prevent sand leakage and seam failure. We made these improvements on top of our industry best Scars Lifetime Guarantee and our reinforced, neoprene padded handles that, like all the steps we take, require more time - but they&';re worth it so that we can proudly say that we build the best, toughest training sandbags on Planet Earth. Features Scars Lifetime Guarantee. This is the best guarantee on the market for Training Sandbags and our other gear. Heavy duty padded handles, proudly NOT rubberized 12 Handles: Reinforced neoprene padding sewn into every one of them Reinforced, Double pass stitching at every seam Primary material: 1000D CORDURAA(R) The burliest YKK zippers that money can buy Silent zipper pulls so you don&';t hear metal zipper heads clanging Box X stitch reinforced handles Triple Velcro Closure Filler Bag with reinforced nylon webbing GORUCK Spearhead embroidery Weight patch included. Filler bag has weight embroidered on Filler Bag included (Note: Filler Bag do not include sand) Weights are taken using dry, Florida sand from our beaches Specs + Materials Zippers:The burliest, sturdiest YKK zippers money can buy Materials: 1000D CORDURAA(R), Nylon Webbing, Neoprene padding 40LB Sandbag: 22"L x 8.5"D 60LB Sandbag: 28"L x 8.5"D 80LB Sandbag: 34"L x 8.5"D 100LB Sandbag: 35"L x 8.5"D 12 reinforced handles with neoprene padding 80 bartacks on 40LB, 88 bartacks on 60LB Triple stitched filler bag seams