How do I know if my boots will fit in the compartments?

Check the manufacturer's stated boot size compatibility, which is usually listed in the product specifications. Most boot backpacks accommodate boots up to size 29–30 (US men's), but larger freeride boots or race boots with tall cuffs may not fit. If you wear size 30+ or have particularly bulky boots, look for packs with larger or expandable boot compartments. When in doubt, measure your boots and compare to the compartment dimensions listed in the specs.