Most other phone armbands are bulky, uncomfortable to wear because they have fabric and material that can scratch you or cause irritable chaffing on your skin. Our engineers have resolved this problem by designing an armband that is soft and made more like a compression sleeve. Ensuring that it will be extremely comfortable on your arm no matter your arm size or size of phone you have Most other phone armbands are bulky, uncomfortable to wear because they have fabric and material that can scratch you or cause irritable chaffing on your skin. Our engineers have resolved this problem by designing an armband that is soft and made more like a compression sleeve. Ensuring that it will be extremely comfortable on your arm no matter your arm size or size of phone you have Compatible with All Phone Sizes - This Armband has enough room to store your phone (no matter the size from 2" to 7") because of its stretchy polyester material. It can even fit more stuff besides your phone. Its a perfect pouch for your keys, wallet, money and more. Now you never have to worry about your stuff when being active Comfort for Him or Her - Finally, an armband that you never have to readjust or worry about it slipping during physical activity. The hugging fit will feel like no other armband you've had before. Please measure your bicep to find out which size is best for you