This Half Round Roller is made from high-quality EPP (Expanded Polypropylene) which is extremely durable, super-strong, very lightweight, and recyclable!. This roller won\'t get bent out of shape easily and is ideal for intensive use, either at home or in a commercial studio/gym environment.. Half Round Rollers are perfect for anyone looking to challenge their balance, core stability, or helping to improve body awareness with certain exercises.. Use it flat side down for stretching, and myofascial massage, or use it on the rounded side to create an unstable surface on which to work on your balance.. At 45cm long, this half-round roller adds an extra challenge by being half the size! Plus, it\'s perfect for taking with you in your gym bag.. Superior durability. Extremely lightweight. Recyclable. Dimensions - 45cm (L) x 15cm (W) x 7.5cm (H). Material - Expanded Polypropylene (EPP). 0.125g