High-performance earplugs that can be easily molded with hot water. - Brand: IMAKARA - Product Name: Custom Mold Earplugs - NRR: 37 - Features: Moldable to heat and shape - Performance: High-performance hearing protection Effectively blocks sound with a triple structure of cap, cover, and sponge/silicone. Achieves overwhelming sound insulation with an unprecedented structure. Soft material made of high-molecular silicone. Comfortable to wear for long periods without ear pain, making it ideal for sleep aids. Minimizes excess noise and sound. Effective for studying for qualifications, exams, training, meditation, as well as at construction sites and live venues. Can be washed with water and dried after use for continuous hygienic use. If you feel the noise reduction is insufficient, try pushing them slightly deeper into your ear for increased effectiveness. Please note that these products do not block all sounds. 5-37