Yoga sit-up aid

New fitness choice, easy to thin waist and belly.

Do you face the following problems in weight loss: no time, no space, too hard, poor results.
With it, one can easily do sit-ups and start your thin waist plan.
No matter the venue, anytime, anywhere.
Environmentally friendly sweat-absorbent foam material, soft and delicate without hurting hands, comfortable and non-slippery.