BUFF® Filter Face Mask (Keren) monsoon 28/32-630 | 27 x 1

28/32-630 | 27 x 1 1/4

The smoothness of the ovals plus the mechanical advantage of the 30T over my old 36T brought my HR down 5% and got me up the hill faster

- Mode "Tire" : release air in one shot to seal tubeless tire

I-Spec EV compatible: 10-degree rotation

Easily attaches to crank arm or hub

BUFF® Filter Face Mask (Keren) monsoon 28/32-630 | 27 x 1Worldwide, face masks have become an essential accessory for daily activities like grocery shopping, using public transport or going for a run. The BUFF Filter Mask features a 3 layer, replaceable filter system in a washable mask design made from CoolNet fabric. Reliable and comfortable, featuring 99% bacterial filtration efficency. Filters meet surgical mask standard EN14683: 2019 type I and II. The BUFF Filter Mask is also certified CWA 17553: 2020.