Bilsom comfort Helmet ear muffs with adaptors 2313-11 1982 original box unused

Description

Bilsom Comfort Helmet ear muffs with adaptors NOS (new old stock)
Vintage 1982 model 2313-11,  USA #2313
Black
Noise reduction rating 23 decibel (details photographed for reference)
lightweight.  Item in box weighs 10.7 oz
Instructions included, in original box
Clean in amazingly good condition for age and storage
Box has cosmetic flaws with yellowing and edge / corner wear