While the exact items needed will vary depending on the location and type of trekking you’ll be doing, here’s a good day hiking gear list to get you started:
Food/Drink – high-protein snacks, water, portable water purifier or filtration system, water bottles, water bladder/hydration reservoir
Sun & Safety – first-aid kit, sunglasses with 100% UV protection, lip balm and sunscreen with SPF of 30 or higher, pocket knife, insect repellant, hand sanitizer
Navigation & Lighting – map/trail guide (with protective case for it), compass, GPS, flashlight and/or headlamp (if hiking close to sunset)
Weather-Related Clothing – Wicking shirt/pant/underwear, gloves/hat/mittens
Personal Items – cash, passport or ID, toilet paper, extra underwear/socks/clothes
While individual models vary, most small hiking backpacks typically come with a handful of standard features, with a variety of optional/bonus features.