310 Gym Sliders
From: 310 Gym
These core sliders help make your fitness goals realities, making you work hard to strengthen and tighten your core muscles.
There are many ways to use the 310 Gym Core Sliders. You can place both sliders underneath the feet and do mountain climbers, planks, and knee tucks.
Caution: Use carefully. May cause injury if used incorrectly.