Comparing Side Access vs Top Loading Hiking Backpacks

Updated 2026-07-07 · 1 Tier Finds

The biggest frustration in backpacking isn't the incline; it's the "gear dig." You know the feeling: you're standing in the rain, and the rain jacket you packed is buried at the very bottom of your bag. When choosing between a side access vs top loading pack, you are essentially deciding how you want to interact with your gear throughout the day.

Top loaders are the industry standard for a reason, but side access (and panel loading) has evolved to solve specific pain points. Neither is objectively "better," but one is definitely better for your specific hiking style.

The Top Loading Pack: Simplicity and Strength

A traditional top loader is essentially a reinforced tube. You stuff gear in from the top and cinch it down with a drawstring or lid. These are the go-to for long-haul trips and minimalist ultralight setups.

The primary advantage here is weight and durability. Because there are fewer zippers—which are often the first point of failure on a pack—top loaders tend to last longer and weigh less. They also allow for "overstuffing." If you accidentally pack an extra blanket or a bulky piece of gear, you can usually just let it sit under the lid.

The downside? Logistics. To get something from the bottom, everything on top has to come out. If you aren't disciplined about your packing order, you'll spend half your trip reorganizing your bag on the trail.

Side Access vs Top Loading Pack: The Convenience Factor

Side access packs (or those with large U-shaped zippers) treat your backpack more like a suitcase. You can unzip the side or the front to reach a specific item without disturbing the rest of your load.

This is a game-changer for multi-day trips where you have a high volume of gear. Instead of unpacking your tent and sleeping pad just to find a spare pair of socks, you simply unzip the side. This keeps your campsite cleaner and saves time.

However, there is a trade-off. Zippers add weight and create potential leak points if the pack isn't weather-treated. More importantly, if you don't pack your gear tightly, the items can shift toward the side opening, pulling the center of gravity away from your back and causing shoulder strain.

Matching Capacity and Fit to Your Trip

Regardless of the opening style, the pack is useless if it doesn't fit your frame. When browsing hiking backpacks on Amazon, ignore the "one size fits all" claims. You need to focus on three specific metrics:

• Torso Length: This is the distance from your C7 vertebra (the bump at the base of your neck) to the top of your hip bone. A pack that is too long will pull on your shoulders; one that is too short will put all the weight on your lower back.
• Liter Capacity: For a daypack, 15-30L is standard. For a weekend trip, look at 40-60L. For a week-plus expedition, 65L+ is necessary.
• The Hip Belt: 80% of the weight should sit on your hips, not your shoulders. Look for padded, contoured belts that wrap fully around your iliac crest.

Price Tiers and What to Avoid

You don't need to spend $400 to get a functional pack, but you get what you pay for in terms of suspension and materials.

Budget ($50–$120): These are great for casual day hikes. Expect basic nylon and minimal padding. Avoid budget packs for multi-day trips; the lack of a real internal frame will lead to back pain very quickly.

Mid-Range ($130–$250): This is the sweet spot for most hikers. You'll find ripstop fabrics, better hydration compatibility (dedicated sleeves for bladders), and adjustable torso lengths.

Premium ($260+): Here, you are paying for weight reduction (ultralight packs) and high-end ergonomics. If you are hiking 10+ miles a day, the weight savings of a premium pack are worth the investment.

Avoid "fashion" hiking packs that lack a structured frame. If the pack collapses when empty, it will likely collapse under load, shifting the weight onto your shoulders.

Maintenance and Setup

To make any pack last, stop dropping it on abrasive rocks. When you're taking a break, lean it against a tree or lay it on a tarp. If you use a pack with zippers (side access), keep them clean of grit and sand to prevent the teeth from jamming.

When loading, follow the "ABC's": Accessibility, Balance, Compression. Put heavy items (water, food) close to your spine in the center. Put light, bulky items (sleeping bag) at the bottom. Use your compression straps to pull the load tight against your back to prevent the gear from swaying.

FAQ

Which is better for rain?

Top loaders are generally more water-resistant because they have fewer seams and zippers where water can seep in. If you go with a side-access pack, ensure it comes with a rain cover.

Do ultralight packs usually have side access?

Most true ultralight packs are top loaders. Every zipper removed is a few grams saved. If weight is your primary concern, go with a simple top-loading roll-top design.

How do I know if my hip belt is tight enough?

Once loaded, your shoulder straps should feel like they are barely touching your shoulders, or providing only light tension. If you feel the straps digging into your traps, your hip belt is too loose.