About This Guide

For everyday school or office use, a 20 to 30 liter backpack with a padded laptop compartment, organized front pockets, and a padded back panel handles most needs. Hiking packs need a frame and hip belt for load transfer. Travel packs need clamshell opening and carry-on compliance.

At a Glance

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How to Choose a Backpack Buying Guide

How to Choose a Backpack in 2026: Buyer's GuidePhoto by Ketut Subiyanto / Pexels

The most common backpack buying mistake is choosing by aesthetics and then discovering the design fails the actual use case. A sleek minimalist daypack with no hip belt becomes painful after two miles on trail. A technical hiking pack with external frame looks absurd in an office and opens from the top in a way that makes accessing a laptop mid-commute impractical. Before comparing any specific models, define your primary use case: daily commute, school, hiking, travel, gym, or a combination that requires a compromise pack.

Volume: Liters and What They Mean

How we picked these. We researched apparel and accessories across 20+ expert sources including Wirecutter, GQ, and Runner's World to identify the key factors that matter most to buyers.

How we researched this. We researched backpack selection across Wirecutter load carry and strap comfort testing, REI Expert Advice fit guidance, OutdoorGearLab trail and daily-use evaluations, and r/onebag community travel feedback to identify the suspension design, organizational layout, and material durability that match different carrying loads and use contexts.

Backpack volume in liters indicates total internal capacity. A 20L daypack fits a laptop, lunch, light jacket, and daily essentials. A 30L pack adds room for gym clothes, a full meal kit, or a change of clothes. A 40L pack approaches travel territory and can serve as a personal item or small carry-on. Hiking packs start at 30L for day hikes and go to 70L+ for multi-day backpacking. Volume is a rough guide — internal organization and shape matter as much as raw liters. A 25L pack with no laptop sleeve and a single main compartment carries less practically than a well-organized 20L with dedicated zones. Our best backpacks for college guide covers the sweet spot for school use. For travel, see best carry-on backpacks.

Suspension and Carry Comfort

For loads under 15 pounds, shoulder strap padding and a back panel with airflow channels are sufficient. For heavier loads — hiking gear, overnight travel, textbooks — a hip belt is essential for transferring load weight to your hips rather than your shoulders. Without a hip belt, a 30-pound pack rests entirely on your shoulders and causes fatigue within an hour. Sternum straps provide additional stability by keeping shoulder straps from slipping outward. Load lifter straps connect the top of the shoulder straps to the top of the pack frame and allow you to adjust the angle at which the pack sits against your back. For hiking-specific packs, fit the suspension to your torso length, not your height — most hiking pack manufacturers specify torso lengths in S/M/L sizing. Our best backpacks for back pain covers ergonomic designs specifically tested for extended carry.

How to Choose Backpacking Packs || REI
How to Choose Backpacking Packs || REI

Laptop Compartments and Device Protection

Laptop compartments should have a padded sleeve that suspends the laptop off the bottom of the pack — this prevents the laptop from absorbing impact when you set the bag down. The sleeve should be accessible without unpacking everything above it. A dedicated laptop compartment with its own zipper that opens at the bottom of the laptop zone is the airport security standard — you can slide the laptop out flat for screening without removing anything else. Check the laptop size compatibility: most packs accommodate 15 or 16 inch laptops, but verify for 17 inch models. Padded tablet sleeves are a secondary consideration — most tablet users end up using the laptop sleeve anyway. See our hiking backpack guide for frame packs with waist belt load transfer.

Material and Weather Resistance

Most quality backpacks use 200D to 600D nylon or polyester. Higher denier numbers mean thicker, more abrasion-resistant fabric. Ripstop patterns add tear resistance without adding weight. Water resistance comes from two sources: DWR (Durable Water Repellent) coating on the fabric surface, and seam sealing or waterproof zippers on select models. Most commuter and school packs are water resistant, not waterproof — a light rain beads off, but a downpour will eventually penetrate. For heavy rain environments or hiking in wet climates, look for a pack with a rain cover included or buy a separate pack cover. The bottom of a backpack takes the most wear — look for reinforced material on the base panels. Our best backpacks overall and best backpacks under $50 cover weather-resistant options at multiple price points.

How to Choose a Backpack for Hiking and Backpacking
How to Choose a Backpack for Hiking and Backpacking

Organization and Pocket Layout

Organization needs vary by use case. School packs need a laptop zone, a main book compartment, a front organizer pocket with pen loops and a key clip, and a water bottle pocket on each side. Travel packs benefit from a clamshell opening (opens flat like a suitcase) for packing organization and TSA screening. Hiking packs prioritize top-lid pockets for frequently accessed items like snacks and sunscreen, hip belt pockets for phone and energy gels, and hydration reservoir compatibility. Avoid packs with so many pockets that finding items becomes disorganized — four well-sized zones used consistently beat twelve narrow pockets scattered randomly. Side water bottle pockets should hold a 32 oz bottle securely without requiring two hands to insert and remove.

How to Find Your Backpack Size at Home || REI
How to Find Your Backpack Size at Home || REI

See detailed reviews below ↓

Frequently Asked Questions

What size backpack do I need for college?
Most college students find a 20 to 30 liter backpack sufficient for a full day of classes. A 25L pack fits a 15 or 16 inch laptop, full-size notebook, textbooks, lunch, water bottle, and charger. If you carry a change of gym clothes or commute long distances with extra gear, size up to 30L. Avoid oversizing to 40L or more for daily school use since a larger bag invites overpacking and causes unnecessary back strain.
Do I need a hip belt on a backpack?
For loads under 15 pounds, a hip belt is optional and mostly for feel. For loads over 20 pounds carried more than 30 minutes, a hip belt is essential. It shifts 60 to 70 percent of the load from your shoulders to your hips and dramatically reduces fatigue. Hiking packs 30L and larger should always have a substantial hip belt. Commuter and school packs often include a hip belt for heavier daily loads.
What is the difference between a hiking backpack and a travel backpack?
Hiking packs are optimized for load transfer with a frame, hip belt, and top-loading design for access during a hike. Travel backpacks open clamshell-style like a suitcase for packing organization, have lockable zippers, laptop sleeves near the back panel for security, and are sized to meet airline carry-on dimensions. A travel pack is the wrong choice for hiking and a hiking pack is impractical for airport travel.
How do I know if a backpack fits properly?
The shoulder straps should rest fully against your shoulders with no gap at the top. The hip belt should sit on your iliac crest (hip bones), not your waist. The pack back panel should contact your back from shoulder to hip belt without bowing out. Load lifter straps at the top of the shoulder straps should angle at approximately 45 degrees when adjusted. For hiking packs, measure your torso length from C7 vertebra to iliac crest and match to manufacturer size charts.
Is a waterproof backpack worth it?
Most backpacks are water resistant, not waterproof. Water-resistant DWR coating repels light rain for 20 to 30 minutes. Fully waterproof backpacks use welded seams and waterproof zippers to prevent any water ingress. For commuting in heavy rain or kayaking, a waterproof bag is worth the premium. For general use, a $10 to $20 rain cover that fits over any backpack gives equivalent protection at a fraction of the cost.
What materials are best for a durable backpack?
Look for 420D to 600D nylon for a balance of durability and weight. Ballistic nylon (1050D+) is extremely abrasion resistant for heavy-use packs. Ripstop weave patterns add tear resistance in thinner fabrics. Polyester is lighter but less durable than nylon at the same denier. Cheap packs often use 210D or lower fabric that scuffs and tears easily. Check the base panel specifically since it takes the most abrasion from being set down repeatedly.
Can I use one backpack for both hiking and travel?
Hybrid travel-hiking packs exist and work reasonably well for light hiking (day hikes, easy terrain) combined with urban travel. They typically feature a clamshell opening plus a hip belt, and fit carry-on dimensions. For serious hiking with heavy loads or multi-day trails, a dedicated hiking pack with a proper frame performs significantly better. For casual hiking plus regular travel, a 35 to 40L hybrid pack is a reasonable compromise.

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