I have been using banded ear plugs for years and find them very convenient and effective. Specifications:

• Lightweight & durable
• Designed for intermittent noise exposure
• Reduce pressure on the ear canal
• Washable, reusable and replaceable ear pods Can be worn under the chin or behind the neck
• Design prevents ear pods touching dirty surfaces
• Certified to AS/NZS1270:2002
• Class 3 protection with SLC80 rating of 19dB
• Each set includes extra pair of pods