Amazon.com: Airex Balance Pad – Exercise Foam Pad Physical …

MULTI-USE: Exercise balance pad works to increase instability and difficulty of balance, mobility, standing stability, and motor-skill training – great for use as a kneeling pad for around the house in the garden, kitchen, bathroom or standing desk mat. EASY CARE: Simply rinse, shake off excess water and allow to air dry after use.

https://www.amazon.com/SPRI-Stability-Exercise-Physical-Rehabilitation/dp/B0000AJ09L