Speed Sac

Build explosive leg drive and speed right of the blocks with the SpeedSacImprove 40-yard dash times, overall speed and explosivenessStrengthen lower-body muscle groupsAdjust weight options for variable weight resistanceIncludes 3 durable weight bags that can each be filled with up to 10 lbs of sand (30 lbs total)Adjustable leash length to accommodate athletes of any size