Merrell

Things to consider when picking a hiker:
Fit: Consider the width of the toe box & its volume. Feet swell while on hikes so extra wiggle room will keep you comfortable longer.
Midsole: Midsoles are all about cushioning, comfort & shock-absorption. Cushioning should be in the forefoot & shock absorption should be in the heel. A "springier" midsole returns a little energy with every step, so they are nice for a fast hike or going a long distance. A denser midsole helps protect feet from natural hazards.
Outsole: Deeper lugs are for more rugged or slick terrain and shallower lugs are more versatile for hiking around town. 
Height: The taller the boot, the more support you'll have. Low-cut hikers are the lightest & most flexible option. Mid-cut hikers are a hybrid options. They balance ankle support & protection with flexibility. High-cut hikers have more ankle support, and they are helpful on super rugged terrain or if you're carrying a heavy pack.
Upper: Material choices should match the type of hiking you plan to do. Leather or synthetic materials are more durable but typically heavier & less breathable. Mesh options are great for hot, dry hikes. Waterproof boots keep your feet dry, but the waterproofing must be breathable, or your feet will get wet from sweat.