@unisysh: Made of non-toxic ABS material, safe and odorless. It features high toughness and durability, offering stable support to prolong the service life of foam rollers. Custom sizes, wall thicknesses and colors are available, compatible with all foam roller specs. Reliable quality for bulk orders. #ABSCore #FitnessAccessories #EcoFriendlyMaterial #CustomProducts #FactoryDirect #SportsEquipmentParts