BALANCE BOARD:17.5” L × 13.5″ W × 3” H; one-piece design comes fully assembled that supports the body's natural need for movement, engages your core,The core training strengthens many important muscle groups at the same time as the abs and back. You build muscle quickly, burn fat, get fit and prevent back pain, PERFECT GIFT FOR CHILDREN OR FAMILY: Wood Wobble Exercise Balance Board are designed to develop kids' balance skills and body coordination with joy and adults can also be used for treatment or training at home, outdoors, and in the gym.You train all important muscle groups, arms, shoulders, back, abs, glutes and legs simultaneously and with high efficiency using the plank workouts. SAFETY GUARANTEE WITH NON-SLIP BOTTOM:Designed With non-slip silicone edge and texture surface paired, that can increase the friction atop carpet,tile,grass,hardwood floors,etc,Nonskid and stable base can ensures safety during your exercise. UNIQUE HIGH QUALITY MATERIAL:Our wooden board is made from Using non-toxic and odorless healthy hardwood plywood. The max load is 350 lbs, also suitable for adults, so this balance training kit is also an excellent parent-child game toy.Hich is stronger and last longer than others made of birch or pine plywood. CUSTOMER SATISFACTION. Providing a 100% satisfaction experience is our main priority to our customers. Feel free to message us through “contact sellers” if our products don't meet your expectations.