Elvex HB35 Maxi Muff hearing protection with SuperSeal ear cushions for long term comfort. A soft cushioned headband. Sophisticated design and durable materials. Low headband force for greater comfort. Self-aligning suspension, and easy adjustment. Dielectric construction. HB-35 Best price in its performance class. Noise Reduction Rating is 28 DB, and the test was performed to ANSI S3.19-1974 at an independent and certified laboratory. SNR 30. Lightweight at only 9.8oz. Delta Corp# WELHB35.