The thickness differences of combat leg guards are mainly reflected in protection, flexibility and applicable scenarios: • Thin style (usually 3-5mm): It has strong flexibility, making it more suitable for speed-based combat (such as the fast-moving segments of boxing and Sanda). However, its protection is relatively weak, so it is generally used for daily basic training. • Thick style (usually 8-15mm): It offers good protection and can effectively cushion heavy blows (such as in Muay Thai and MMA actual combat confrontations). But it restricts the range of leg movement, so it is more suitable for high-intensity confrontation training or competitions.