An update to the original. the new Medio Backpack has an improved fit and greater visibility for safe. comfortable riding. A super-durable. water-resistant. expandable pack. the Medio is designed for serious cyclists. The internal waterproof drop liner keeps water out. and a backbender flexible cooling panel feels good on your back and keeps you cool. Hits of reflective paneling keep you visible on late night rides. and an improved taper design enables clear over-the-shoulder visibility. Ride it to work. ride it for an overnighter; the Medio is ready to haul.