NAIZEA Adjustable Weight Sled Trainer, Sandbag Sled Trainer Resistance Sled Trainer for Sprinter Speed Training Indoor with 4 Weight Sandbags 10-40 lbs

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★ High Quality Materials – The weight sled trainer is made of thickened PVC material, it can be used on the surface of grass, turf or wood floor, velcro-secured straps hold weight bags firmly in place. It is damp-proof, durable and reliable.
★ Adjustable Weight – This sandbag sled trainer comes with 4 weight sandbags, each one is able to fill with 10 lbs, so you can fill into 10-40lbs to meet your workouts. Adjust weight options for variable weight resistance. Adjustable leash length to accommodate athletes of any size.
★ 360° Belt Ring – 360-degree belt ring allows for multi-directional training to improve strength and mobility in any direction; adjustable leash fits any sized athlete.
★ Sandbag Sled Trainer – Adjustable weight sled trainer for sprinters, football players and other athletes strengthen lower-body to improve speed and explosiveness by forcing you to tow a weight in the bag.
★ What Do You Get – Includes 1 PVC outer bag, 4 removable weight bags (sand not included), adjustable leash and waist belt, 24 hours online after sale and one year warranty.