Has some marks on the bottom please see pictures

The Simply Fit Board is a versatile balance board designed for home use. Made of durable plastic in a sleek blue color, this indoor/outdoor fitness equipment can support up to 400 lbs of maximum user weight. The twist feature adds variety to your workout routine, making it suitable for gym training and various fitness activities. With dimensions of 10" in height, 26" in length, and 11" in width, this balance board provides a stable and comfortable platform for improving your balance and overall fitness level.