Made of , high-density and ecological foam, the foam blocks with yoga strap help beginners and senior yogis to achieve optimal alignment, posture and higher strength. These and supportive foam blocks are constructed of a foam with a nonslip and beveled edges for easy gripping. No nasty smell even when with our yoga block. The foam is moisture-proof so it 't absorb sweat and is easy to clean, great choice for yogis to strengthen the body and increase the flexibility. It is soft and comfortable enough which can help you assist with hard-to-reach poses, enhance warm ups, improve flexibility, strengthen and tone muscles, and add challenge to workouts. The Yoga Block Set are perfect for Yoga, Pilates, Meditation and other Daily Exercise. colour:Black Material:EVA+cotton size:Yoga belt: 183cm, yoga brick: 23 x 15 x 7.5cm Package Contents: 4 x Yoga Block 2 x Yoga Cotton Strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.