Seriously, if you spend time outdoors, these Tisancy arm sleeves are a must-have! You get TEN pairs in this pack - that's enough to share with family or have plenty of backups. The medium size fits most people comfortably with an upper arm circumference of about 28-30 cm - not too tight to cut off circulation, but snug enough to stay in place. The material is this lightweight polyester that feels amazingly cool against your skin, even on hot days. What I love is the anti-slip design on the cuffs - no more constantly pulling up your sleeves because they've slid down your arms. They provide solid UV protection without making you feel like you're wearing an extra layer, and the compression aspect is gentle but supportive for your muscles during activities. I've used them for cycling, running, gardening, even just driving when the sun is intense - they're incredibly versatile. The mixed colors are fun and practical - easy to match with different outfits without looking too medical. They're stretchy enough to fit well without feeling restrictive, and the quality feels durable enough to handle repeated washing. Whether you're protecting tattoos from sun fading, wanting extra muscle support during workouts, or just trying to avoid sunburn during outdoor activities, these sleeves deliver exactly what you need. The value is insane - ten pairs for less than what you'd typically pay for two or three pairs elsewhere. Toss a couple in your gym bag, keep some in your car, share with friends - you'll wonder how you ever managed outdoor activities without these handy sleeves protecting your arms from the elements!