The osprey zealot 15 is an extreme all mountain backpack and comes with all the features that make your cycling life easy and super efficient the need to have features and durability but remain lightweight and comfortable is the aim for every luggage company ospreys signature airscape backpanel biostretch harness and hipbelt provides serious fit and comfort even when youre ripping through the toughest technical sections of track the zealot has backpanel entry to the main compartment allow