Adjustable Design Board Helps You Stretch Properly, Reduce The Chance Of Injury And Make Your Muscles More Responsive During Exercise Lightweight Convenient And Flexible For Use In Home, Office, Travel, Indoor And Outdoor Exercise Made Of High Quality Hard And Durable Plastic Anti-Slip, Features A Patterned Surface And Plastic/Rubber Heel Trim To Protect You From Slipping Choose Between 15 Adjustable Height Levels To Suit Everyone Withstands Weight Of 100 Kg Product Colors: Available In Blue, Green, Pink, Purple