The right gear changes as the season goes on.

Early season
Warm days call for light, breathable layers, plenty of water and bug protection.
Mid season
Calls, decoys and mid-weight layers come into play during the rut and peak migration.
Late season
Cold weather calls for insulation, wind protection, hand warmers and dry boots.
Blaze orange
About 44 states have some blaze orange requirement, most often during firearm deer seasons. Amounts and placement vary by state.
Gear rules such as blaze orange requirements change. Always check the current state regulations.