DOUBLE-SIDED PLAY, ENDLESS CREATIVITY – What is Balance Board? Is it a ship? Is it a car? Is it a bridge? Is it a surfboard? Sky’s the limit. It’s whatever your kid wants. One minute kids are balancing and the next it's a bridge for cars, accessories for nugget couch, rocker, bed, slide, boat, or other magic stuff, who knows? Children play with it all day, every day, your kids will love this 37" LARGE SIZE FOR MORE FUN – Integrity is our bottom line. Our balance board has an arc length of 106cm(41.73 inches) and a diameter of 93cm(36.6 inches), but we would never say our length is 42 inches, we think our length should be 37 inches, that's no problem. Nevertheless, our balance board is still the largest size available on the AMZ market today 13-LAYERS OF SOLID WOOD SUPPORT – Each wobble board is made of 13 layers of selected high-quality solid wood (11 layers of birch + 2 layers of beech) after high-temperature pressing molding, bearing weight easily more than 330 pounds (up to 390 pounds), to ensure the safety of children playing by themselves or adults playing together PREMIUM CRAFTSMANSHIP – The high-quality toughness of beech wood makes the balance board will not break when it is hot pressed and will not be deformed after cooling. Each board goes through 2 machine grinding and 3 manual grinding (so there is 0.4-0.6 inch error in diameter length) to ensure every part is smooth and burr-free BOTH FOR KIDS & ADULTS – Thanks to the use of 13 layers of selected high-quality solid wood, it can withstand the weight of 2 adults[Typical Value], so you can join your kids to play together or use it to exercise balance and yoga. Enjoy parent-child interaction time and have great fun without leaving the room during COVID FOR MORE EXERCISE, FEWER SCREENS – If your little one has been addicted to the iPad, this kid's balance board is a timely savior. While kids are balancing, moving & climbing on the board, it helps free them from the digital screen and improve their motor skills. It's time to say goodbye to screens! 100% CUSTOMER SATISFACTION GUARANTEED – Although we use infallible packaging because it is made of natural wood, it is inevitable that it will break during transportation. If you receive the balance board wood edge is damaged, please don't hesitate to contact us freely! Your purchase comes with a 30-day full refund!