Wacces Foam Exercise, Fitness & Yoga Blocks - Set of 2 BALANCE & STABILITY: Help promote better balance, proper alignment, and deeper poses NON-SLIP: Slip-resistant texture help ensure a secure hold; round edges for a comfortable, steady grip MODULAR: Lightweight and modular; use separately or stacked together in a variety of configurations QUALITY & HYGIEN: Made of high-density foam for reliable support, long-lasting performance and easy to clean PERFECT SIZE: Large enough to comfortably sit on or step up; measure 9 x 6 x 3 inches each (LxWxH)