COFRA Thermic -50 PU Boot Anchors 3M recommends reducing the NRR

3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided

1 - 120L Rollout Cart-Yellow

A breast pocket

1 - 20lb Bag of Solid-A-Sorb

COFRA Thermic -50 PU Boot Anchors 3M recommends reducing the NRRInnovative extra light compound. It resists very well to hydrolysis, permitting the boot to maintain its chemical and physical performance during time. A perfumed essence is added to the compound to prevent nasty odors. Features: Upper: COLD DEFENDER PU resistant to 25 C 13 F Intersole: COLD DEFENDER PU resistant to 25 C 13 F Outer sole: nitrile rubber resistant up to +300 C +572 F (1 minute contact) and to low temperatures up to 25 C 13 F Toe cap: