UNDER ARMOUR Under Armour UA HeatGear Armour Heat Gear New, Unused Compression Short Sleeve Mock Neck 1358650 Red Kids Children's YS 130 size Junior Boys' Baseball Sports Color) Red (600) Red Size) YS 130 size Kids Children's Height 125-135cm Chest 61-67cm Fit) Compression. Type that fits snugly I purchased this from Amazon almost two months ago, and when I tried to open it as the weather got warmer, I realized I had the wrong size. I looked into why I made the mistake, and usually, the sizes are listed as "S, M, L, XL" from left to right, but on Amazon.co.jp, the Young sizes are listed as "YL, YM, YS, YXL" from left to right. I apparently bought a YS size thinking I was buying a YL size without properly checking. Since it's been over a month, I can't exchange or return it, so I'm putting it up for sale. It's unopened, so please search the model number on the official website or elsewhere for more details. * Unlike the blue one (sold out) listed separately, there are no package defects. Thank you for your consideration. Addition) I brightened the first photo because it was dark. I will send it via Nekopos. ⚠️ Please consider this if you don't mind the yellow sticker that comes with Nekopos getting creased. * Also, I've set a longer shipping time because I'd like to ship Nekopos items together as much as possible. If you're in a hurry, please let me know, and I'll do my best to accommodate you. Gender...Kids Sleeve...Short Sleeve