Features 1、65cm strap length design, it can hang on the back of your neck, avoid losing or dirty. 2、Made of silicone material, very soft, comfortable for your ear and protect you ear from water penetration. 3、If you have ear strain, this earplug can reduce hearing strain. 4、Fit great in your ear and doesn't fall out all the time, it stays in place even though you move your head around; suitable for sleeping/swimming/security working/running/study, etc. 5、The Christmas tree shape design will create triple noise barrier when you wearing it so as to achieve the best anti-noise effect. Specification Features: 65cm strap length design, it can hang on the back of your neck, avoid losing or dirty. Made of silicone material, very soft, comfortable for your ear and protect you ear from water penetration. If you have ear strain, this earplug can reduce hearing strain. Fit great in your ear and doesn't fall out all the time, it stays in place even though you move your head around; suitable for sleeping/swimming/security working/running/study, etc. The Christmas tree shape design will create triple noise barrier when you wearing it so as to achieve the best anti-noise effect. Specification: Material: Silicone Color: Shown as Picture NRR: 29dB Quantity: 10pair Package Weight: 60g/2.1oz Package list: 10 * Pair of Earplug