PU 폼 스트레스 볼 (4~6주 내 배송)

Was a bit skeptical ordering this many, but the 6.3 cm size is perfect for squeezing during long meetings. The foam has just the right amount of give without being too squishy.

I've been squeezing this little 6.3cm ball while working and it holds up really well. The foam texture gives just the right amount of resistance without being too hard.

I had to wait about five weeks for these to arrive, but the 6.3cm size is just right for squeezing in one hand. The PU foam gives a satisfying slow rebound that helps me focus during long meetings.