Stepping on a Waff. Based on the energy field, there's a central spine at the center core for ideal equilibrium and stability. Surrounding this, the reactive surface is based on a free energy return system or vortex.. Unlike proprioceptive training tools of the past like Waff's proprietary design is engineered to give you the perfect balance of mobility AND stability. (up to 300 lbs). What is your favorite leg exercise? Let us know in the comments down below. *Links to all our products in the bio #balancetrainer #balancefittness #equillibrium #designinspiration #functionaltraining #functionalworkout #rotaryspeed #waffstudio #waffapp