Description:Material: SiliconeNoise reduction rate: 40%Function: sound insulation, noise reduction, waterproofUse range: sleep, rest, work, exerciseEfficacy: sound insulation, noise reduction, waterproofPacking: plastic storage box + color boxWhether washable: washableEarplug head shape: umbrellaNoise Reduction Rating (NRR):40%Specifications:1. Environmentally friendly silica gel, washable, can be washed repeatedly after use, protect the health of the ear canal2. Immersive noise reduction earplugs, stop the hustle and bustle of quiet life has never been so simple3. sound insulation upgrade effective filtering of living noise innovative sound insulation core accurate isolation of all kinds of living noise4. Ergonomic design, comfortable to wear, fitting ear shape flexible tail precision fit ear ridge rolling does not fall off5. Transparent shell, compact and easy to carry transparent shell packaging out of easy to carryPackage Included:1 * Earplug Set