平衡墊

I've been using this under my desk for about three weeks and my lower back pain has genuinely eased up. The constant micro-movements are subtle but you definitely feel your core working by the end of the day. Sitting through a full afternoon no longer leaves me stiff.

The textured surface gives just enough grip to keep me from sliding off, and the constant micro-adjustments have really woken up my lower back after a few hours of TV watching.

Been using this on my office chair for about three weeks and my lower back no longer aches by 3pm. The textured surface actually keeps me from sliding around, and I catch myself adjusting my posture constantly without thinking about it. Genuinely surprised how much the little micro-movements add up.