I ordered two packs of these on a whim, and WOW, do I love them. Despite the shipping time they actually arrived in two days, and I think they're my favorite running mask so far. The material is protective but lightweight, with sort of a wetsuit feel. It stays locked in place while I'm running, even though I sweat buckets in the heat. The seams are so subtle that they don't irritate my face. Also, I feel really cool wearing them, which is saying something, because I am the least cool person I know. Note: I got the M/L size and tied the elastic straps for a tighter fit; XS/S seems more geared at kids and people with smaller faces.
Promising review: "This is an awesome workout mask!! Very breathable material with a pocket for adding a filter. By far the best fitness mask I’ve purchased so far. I highly recommend purchasing this for serious fitness advocates." —DAKOTA86SW
Type Of Fit: Elastic ear straps
Pocket For Filter: Yes
Fabric Type: Recycled Polyester & Elastane
Shipping Time: Expected to ship in 6-7 business days
Get a set of three from Reebok for $20.