Sponge ,Plastic Made in USA DIGITAL AM/FM TUNING: LCD display auto-searches for radio stations; clear digital stereo radio reception, 10 pre-set stations and volume memory for personal on-the-job listening experience HIGH VISIBILITY SAFETY: Hi-Viz bright green earcups and reflective headband increase employee visibility for greater safety while working at night, in low light conditions, and in bad weather EAR PROTECTION & COMFORT: Patented Air Flow Control technology reduces sound across all frequencies without increasing earcup size or weight; lightweight design and padded headband for comfort EASY USE & MAINTENANCE: Snap-in ear cushions allow for easy maintenance and replacement; includes 2 AA batteries, 3.5 mm AUX input jack & connection cable for use with any mp3 player or mobile device NOISE REDUCTION RATING 25: Recommended industries include aviation, farming, construction, lumber, steel, transportation, military/law enforcement, manufacturing, sporting, DIY projects, contracting