Materials: 69% polyamide nylon

Pros: Can be used in the wet and in the dry and is easy to apply

Pros: Small

especially for hotter days on the trail

Maxxis Ultralight Tube - 700c - Presta - 33-50c - 48mm Envelope Shipping Materials: 69% polyamide nylonMaxxis Ultralight tubes are lightweight and durable racing tubes. Be sure to keep a few spares on hand! Who's this item for: Racers looking for a lightweight advantage on their XC bike. Removable valve core: Yes, the valve cores are removable. Tube wall thickness: 0. 60mm Weight: 27. 5 x 1. 75 2. 40: 147g 29 x 1. 75 2. 40: 156g Materials: Butyl rubber with a metal valve stem and core.