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When you’re preparing for your first thruhike, choosing the right backpack is one of the most important decisions you’ll make. The debate between frame and frameless backpacks confuses many beginners, but understanding the basics will help you make the right choice for your hiking style.
What Makes a Pack Framed or Frameless?
A framed backpack contains a rigid internal or external structure, typically made from aluminum stays, plastic sheets, or carbon fiber rods. This frame sits against your back or inside the pack’s fabric, creating a supportive structure that transfers weight to your hips through a padded hip belt.
Framed Examples:
A frameless backpack is exactly what it sounds like: a pack with no rigid support structure. These packs rely entirely on how you pack them and your body’s natural structure to maintain their shape. Think of them as sophisticated stuff sacks with shoulder straps and organizational pockets.
Frameless Examples:
Why Framed Backpacks Exist
Framed packs were designed to carry heavy loads comfortably. Before the ultralight movement transformed thruhiking, backpackers regularly carried 40 to 50 pounds or more. The frame serves several critical functions:
Load transfer is the primary purpose. The frame creates a rigid structure that channels weight from your shoulders down to your hip belt. Your hips and legs are much stronger than your shoulders and back, so this weight distribution prevents fatigue and injury on long hiking days.
Air circulation improves when a frame holds the pack away from your back. This gap allows airflow between your body and the pack, reducing the sweat and heat buildup that makes hiking uncomfortable.
Pack structure remains consistent regardless of how you pack your gear. The frame prevents the pack from sagging or losing shape when you’re carrying awkward items like bear canisters, food bags, or water bladders.
Comfort with heavier loads becomes possible because the frame distributes pressure across your hips and lower back rather than concentrating it on your shoulders. Most hikers find that framed packs become essential when carrying more than 25 to 30 pounds of total weight.
Why Frameless Backpacks Exist
The ultralight backpacking revolution sparked the development of frameless designs. As hikers learned to reduce their base weight (the weight of everything except food, water, and fuel), they discovered that frames became unnecessary and added unwanted weight.
Weight savings are substantial. Removing the frame, heavy hip belt padding, and associated hardware can save one to two pounds. For ultralight hikers targeting base weights under 10 pounds, this represents a significant percentage of their total load.
Simplicity and flexibility define the frameless experience. With fewer components, there’s less that can break or need adjustment. The pack moves with your body rather than maintaining rigid positioning, which some hikers find more natural and comfortable.
Cost efficiency makes frameless packs attractive to budget-conscious beginners. Without complex frame systems and extensive padding, frameless packs often cost significantly less than their framed counterparts.
Packability improves when you don’t need to accommodate a rigid frame. Frameless packs compress down to nearly nothing when empty, making them easy to store or pack inside another bag during travel.
The Weight Threshold
Here’s the most important guideline for choosing between frame and frameless: your total packed weight determines which type you need.
Under 20 pounds total: Frameless packs work beautifully at this weight. Your shoulders can comfortably handle the load, and you’ll appreciate the weight savings and simplicity.
20 to 25 pounds total: This is the gray zone. Some experienced hikers with strong shoulders prefer frameless, while others want the support of a frame. Your personal comfort and conditioning matter here.
Over 25 to 30 pounds total: A framed pack becomes strongly recommended. Carrying heavier loads in a frameless pack risks shoulder pain, back strain, and overall discomfort that can ruin your hike.
Over 35 pounds total: You definitely need a framed pack. Attempting to carry this weight frameless is a recipe for injury.
Remember that your total weight includes everything: your base weight plus food, water, and fuel. Early in a long section when you’re carrying five days of food, you might be well over 30 pounds even with an ultralight base weight.
Proper Packing Techniques
Framed packs are somewhat forgiving of poor packing because the frame maintains structure. However, you’ll still want heavier items close to your back and centered between your shoulder blades for optimal weight distribution. The frame does much of the work, but smart packing enhances comfort.
Frameless packs require careful packing to function properly. Your sleeping pad typically goes against your back to create a pseudo-frame. Dense, heavier items should sit in the middle of the pack, close to your back. Poor packing creates uncomfortable pressure points and can make a frameless pack unbearable even at low weights.
Many thruhikers learn packing techniques through trial and error during their first few days on trail. Don’t be discouraged if your first attempts feel awkward.
Hip Belts and Load Lifting
Substantial hip belts on framed packs do the heavy lifting. These padded belts, often three to four inches wide, wrap around your hips and cinch tight to transfer weight from the frame to your body’s strongest structures. Proper adjustment means 70 to 80 percent of the weight rides on your hips, not your shoulders.
Minimal hip belts on frameless packs serve mainly to prevent the pack from swinging. These thin straps or shock cords don’t transfer significant weight because there’s no frame to channel forces. They simply stabilize the pack against your body.
Some frameless designs skip the hip belt entirely, using only shoulder straps. This works fine at very light weights but isn’t for everyone.
Making Your Decision
Consider these factors when choosing your pack type:
Your base weight goals heavily influence pack choice. If you’re committed to going ultralight with a base weight under 10 pounds, frameless makes sense. If you prefer more comfort items and a heavier base weight, choose a frame.
Trip length and resupply distance matter because they determine how much food you’ll carry. Weekend trips with one or two days of food suit frameless packs. Long stretches between resupply requiring five to seven days of food push you toward framed packs.
Your physical conditioning plays a role. Hikers with strong shoulders and backs tolerate frameless packs better than those still building strength.
Climate and season affect your gear weight. Winter hiking requires more clothing, a warmer sleeping bag, and possibly a four-season tent, all adding weight that may necessitate a frame.
Try Before You Buy
Whatever you choose, test your pack with realistic weight before committing to a thruhike. Load it up with the actual weight you’ll carry (or simulate it with water bottles and books) and take several long day hikes. Your shoulders, back, and hips will tell you if you’ve made the right choice.
Many outfitters offer pack rentals or generous return policies. Take advantage of these options to find your perfect fit. The right pack for your friend might be terrible for you.
The Bottom Line
Neither framed nor frameless packs are inherently better. They’re tools designed for different approaches to thruhiking. Framed packs excel at carrying heavier loads comfortably, while frameless packs reward ultralight hikers with simplicity and weight savings.
Your ideal choice depends on your gear choices, physical abilities, and hiking philosophy. Start with an honest assessment of how much weight you’ll actually carry, then choose the pack type that supports that reality. Your back will thank you for hundreds of miles.