Buy other second hand sportswear
Keep your body healthy by doing more sports. Check out some second hand sportswear sold by some fellow foreigners here. Used sportswear like uniforms, Underarmour clothes, gi, and others can be found here.
If you are a foreigner, specially if you want to leave Japan, you can also sell your used sportswear here. Help fellow foreigners saving money by selling your used goods by clicking +START SELLING button on the top right.