แผ่นรองบริหารหน้าท้อง

Used the tailbone cutout version for the first time yesterday and it made decline crunches feel almost luxurious — no more digging into my lower back between sets. The flat surface on the other side is a nice bonus for when I want to switch things up. Sturdy enough that I don't worry about it slidin

The cutout on the tailbone style is a lifesaver during crunches—no more that dull pressure after the last few reps. It's firm enough for stability but still gives where you need it.

I've been using this support mat for a few weeks now and my lower back feels noticeably less strained during long work sessions. The extra cushioning around the lumbar area makes a real difference, even when I'm sitting for hours.