The Origin Highland Bags are sand filled, double stitched, nylon bags which can be used in many different ways. The Origin Highland Bags are extremely versatile, allowing for new types of workouts as well as the ability to comfortably add weight to bodyweight exercises. Weight ranges from 5kg to 25kg Perfect for upper, lower & core strength training Soft design improves grip Moulds to your body shape SPECIFICATION: Brand Origin Usage Home Use, Commercial Use Condition Brand New Warranty 6 Months