SIZE CHART: A: 3.8*95CM B: 3.8*75CM C: 3.8*65CM Single-handed Operation Designed: Well designed for one hand operation, even you're traveling outside and unexpectedly injured without nobody accompanied with, you can also be treated by your own with it! As a Private Doctors for Outdoor or Emergency: 100% effective in blocking blood flow, quickly controlled the bleeding threatening life, it is able to stop hemorrhaging & saves lives in the key moment and save time and save lives! Perfect for household and also the outdoor exploration High-Quality Tourniquet:it is safe to use, tourniquet with self-adhesive tape is designed to perform in all weather conditions, easy to clean and reusable Easy to Carry: Smaller and lighter, easily add one or more to home emergency kits, cars, backpacks, motorcycles, range bag, construction belt or carried on a person for immediate use Multi-Use: It can be used in military, artery bleeding etc. Different situations require different attention, we have made sure that our tourniquets are completely adjustable to help in any type of situation. Instructions: 1. The tourniquet is placed 5-250px above the wound and inserted into the buckle ring around the limb 2. Tighten the self-adhesive tape, stick it in the opposite direction, and turn the twist rod until the bleeding stops. 3. Snap the twisted rod into the fixing clip. After the excess self-adhesive tape continues to be wound, it is closed with the fixing tape and the hemostasis time is recorded.