Enertor D30 Comfort Insole SNT Fitness The two separate rollers increase

The two separate rollers increase the challenge by placing greater stress on the abs and obliques for more effective training

particularly when hands begin to perspire

Up to 36 percent of energy recycled with every step

Padding is made from EVA 'sandwich foam' for optimal durability and strong shock absorption capacity

Material: Alloy

Enertor D30 Comfort Insole SNT Fitness The two separate rollers increaseFeatures: Durable comfort flexible & lightweight Designed for shoes with reduced space at the toe Suitable for all types of footwear Enhanced by D30 technology that reduces shock and protect against foot pain and injuries