✨ Material composition: 90% nylon ✨ 【Slim Feather Arm Compression Innerwear】 Transforms flabby upper arms and unattractive posture into "slender" and "beautiful posture"! "Fundamental beautiful posture correction*" × "Instant tightening with 3-stage compression*" (*Based on the effects of wearing) ✨ 【Recommended for those who...】 Have flabby upper arms, a hunched back, rounded shoulders, poor posture, want to look slimmer, are concerned about circulation and lymphatic stagnation, or feel like they have accumulated waste products and fluids... ✨ 【Sizes】 M size (sleeve length: 24-30cm / shoulder width: 36-43cm), L size (sleeve length: 26-32cm / shoulder width: 39-46cm), LL size (sleeve length: 28-34cm / shoulder width: 42-49cm) ✨ 【How to wear】 《STEP 1》 Slowly put one arm through at a time. 《STEP 2》 Pull up evenly while gathering the sleeves. 《STEP 3》 Adjust any slack or distortion, and you're done.