“The Guided Calf Section is 2” taller than the calf section used on the Step-Smart Classic, which reduces the pressure on the calf. This makes it more comfortable. You can go strapless!
The medial extension guide can replace the need for calf strap. The guide contacts the leg intermittently when the foot inverts.
Depending on the demands of your day, you can choose to add an optional calf strap (which is removable) as needed.”