GloPlugz Disposable Earplugs. Comfortable, reliable & affordable. According to the National Institute for Occupational Safety and Health (NIOSH), noise-induced hearing loss is 100 percent preventable by wearing appropriate hearing protection. Once acquired, however, hearing loss is permanent and irreversible. Gateway Safety's GloPlugz are affordable hearing protectors that workers won't mind wearing. Soft, comfortable and disposable, GloPlugz earplugs offer serious protection at an affordable price. Their smooth, tapered design allows for incredibly easy insertion and their non-allergenic polyurethane formula is extraordinarily soft and comfortable. GloPlugz are independently tested to a 31 Noise Reduction Rating - one of the highest earplug NRR ratings available. GloPlugz earplugs are available with or without a cord.