How to Choose and Fit a Pack for Multi-Day Hiking

Torso Length vs Overall Height

Pack sizing is based on torso length, not your overall height. Measure from the bony protrusion at the base of your neck (C7 vertebra) to the top of your hip bones (iliac crest) while standing upright. This measurement determines your frame size — most manufacturers offer small, medium, and large torso lengths.

Fitting the Hip Belt

80% of pack weight should sit on your hips, not your shoulders. The hip belt must sit across the iliac crest — the solid bony shelf of your hip bones — not below it. When the hip belt is correctly positioned and tightened, you should feel the weight transfer from the shoulder straps to your hips as you buckle it.

Shoulder Strap Adjustment

With hip belt correctly positioned, shoulder straps should curve around your shoulders without gaps or pressure points. Load lifters — the diagonal straps that run from the top of the shoulder straps to the top of the frame — should be at a 45-degree angle. Too steep (more than 45°) means the pack is too short for your torso. Too flat means the pack is too long.

Loading Correctly

Pack your load with heavy items (tent, food, water) closest to your back at mid-spine height. This keeps the centre of gravity close to your body and reduces leverage on your lower back. Light bulky items (sleeping bag, pad) go at the bottom and top. Frequently accessed items in top lid and hip belt pockets.

Test your fit with a loaded pack before a [multi-day trip planning](https://wildrangelife.com/blog/how-to-plan-remote-fishing-trip-logistics) expedition — a problem identified at home is not a problem on day two at 20km from the car. Browse our outdoor packs and accessories.

eel the weight transfer from your shoulders to your hips. The belt should wrap around your hips with approximately 5-10cm of adjustment room on either side of the buckle. ## Load Distribution and Weight Management Proper load distribution is crucial for multi-day hiking comfort and safety. The ideal pack weight for extended trips should not exceed 20-25% of your body weight, including the pack itself. For a 70kg hiker, this means a maximum loaded weight of 14-17.5kg. Pack your heaviest items close to your back and in the middle third of the pack. This includes your tent body, cooking equipment, and water reservoirs. Place sleeping bags and clothing in the bottom compartment, as these items are typically lighter and won't affect your centre of gravity. Ensure you've packed all [essential camping gear](https://wildrangelife.com/blog/gear-needed-for-first-camping-trip-australia) before testing your pack fit. Keep frequently accessed items like snacks, first aid kit, and rain gear in external pockets or the pack's top lid. Modern multi-day packs often feature compression straps that allow you to cinch down the load and prevent items from shifting during movement. Use these strategically — compress vertically to maintain the pack's slim profile, but avoid over-compression which can damage gear or make items difficult to access. ## Adjustable Features and Fine-Tuning Quality multi-day packs offer numerous adjustment points beyond basic sizing. The shoulder straps should be adjustable for both height and angle. When properly fitted, the shoulder strap attachments should sit 2-5cm below the top of your shoulders. If they're too high, you'll experience pressure points; too low creates an unstable load. The load-lifter straps, which connect the top of the shoulder straps to the pack frame, are often overlooked but essential for comfort. These should be adjusted to a 45-degree angle when the pack is loaded. They help pull the pack's weight closer to your body and reduce the backward pull that causes fatigue. Sternum straps should sit across your chest at a comfortable breathing level — typically 2-5cm below your collarbone. This strap stabilises the shoulder straps and prevents them from sliding outward during movement. Many modern packs feature vertically adjustable sternum straps to accommodate different torso shapes and personal preferences. ## Pack Capacity and Feature Selection Multi-day pack capacities typically range from 50-80 litres, with most Australian conditions requiring 60-70 litres for 3-7 day trips. Whether you're planning a [four-day alpine walk](https://wildrangelife.com/blog/bogong-high-plains-alpine-walk-four-days) or an extended backcountry adventure, consider your gear volume rather than weight when selecting capacity. Ultralight enthusiasts might manage with 50-55 litres, while those carrying photography equipment or winter gear may need 70-80 litres. Modern packs offer various access options beyond the traditional top-loading design. Panel-loading packs, which open like a suitcase, provide excellent organisation but may sacrifice some weather protection. Hybrid designs combine top-loading security with front panel access for the best of both worlds. The [Osprey Aether Plus 70](AMAZON_LINK) (AU$450-550) exemplifies premium pack design with its adjustable torso length, removable top lid, and integrated rain cover. For budget-conscious hikers, the [Macpac Cascade 75](AMAZON_LINK) (AU$280-350) offers solid Australian-made quality with essential features for multi-day adventures. ## Specific Fitting Process Begin the fitting process with an empty or lightly loaded pack to establish the basic fit. Loosen all straps completely, then put on the pack and fasten the hip belt first. The padded portion should wrap around your hip bones, not your waist. Tighten until snug but not restrictive — you should be able to breathe comfortably and move naturally. Next, adjust the shoulder straps to remove slack without taking significant weight. The pack should feel stable but not tight across your shoulders. Pull the load-lifter straps to bring the pack closer to your body, maintaining that 45-degree angle. Finally, adjust the sternum strap for lateral stability. Load the pack with your typical gear weight (use books or water bottles for testing) and repeat the adjustment process. The pack should feel balanced and allow natural walking motion without swaying or pulling you backward. Walk around the store or your home for at least 10 minutes to identify any pressure points or discomfort. ## Gender-Specific Considerations Women's-s ## Common Fitting Mistakes to Avoid Many hikers make the mistake of choosing a pack based purely on capacity or brand reputation, ignoring proper fit entirely. A 65-litre pack that doesn't fit properly will be far more uncomfortable than a well-fitted 55-litre pack carrying the same gear. **Shoulder Strap Positioning** The shoulder straps should curve naturally over your shoulders without gaps or pressure points. If they dig into your neck or slip off your shoulders, the torso length is likely wrong. Quality packs like the [Osprey Atmos AG 65](AMAZON_LINK) feature adjustable torso lengths, allowing fine-tuning for optimal fit. **Load Lifter Angle** Load lifters should angle back towards your shoulders at approximately 45 degrees when properly adjusted. If they're pulling straight up or angling forward, your pack is either too long or short for your torso. This misalignment forces your shoulders to carry excessive weight. ## Weight Distribution and Loading Strategies Proper pack loading is as crucial as proper fit. Heavy items should sit close to your back and level with your shoulder blades. This positioning keeps the weight's centre of gravity close to your natural balance point. **The 10% Rule** Your loaded pack should weigh no more than 10-15% of your body weight for comfortable multi-day hiking. For a 70kg hiker, this means a maximum of 7-10.5kg including water and food. Ultralight packs like the [Gossamer Gear Mariposa 60](AMAZON_LINK) (around $300-400) help achieve these targets by weighing under 1kg empty. **Compartment Strategy** Use the bottom compartment for your sleeping bag and spare clothes. The main compartment houses your heaviest gear — stove, food, and water. Keep frequently accessed items like snacks, first aid, and rain gear in external pockets or the top lid. ## Frame Types and Their Applications **Internal Frame Benefits** Internal frame packs excel on technical terrain where agility matters. The frame sits close to your back, providing better balance on scrambles and narrow tracks. Models like the Gregory Baltoro (starting around $400-500) offer excellent stability for Australian alpine conditions. **External Frame Advantages** External frames shine for heavy loads on well-maintained trails. They provide superior ventilation and easier access to gear. Though less common today, they remain excellent for hunters and those carrying bulky equipment. ## Ventilation and Climate Considerations Australia's diverse climate demands serious attention to pack ventilation. Mesh back panels create airflow between your back and the pack, crucial for hot weather hiking. **Anti-Gravity Systems** Osprey's Anti-Gravity mesh suspension and Gregory's FreeFloat systems (featured in packs ranging from $350-600) dramatically reduce back sweating while maintaining load transfer efficiency. These systems use a suspended mesh panel that contours to your back while allowing air circulation. **Hot Weather Modifications** In tropical conditions, consider packs with removable foam back panels or additional ventilation channels. Light-coloured packs also reflect heat better than dark colours. ## Professional Fitting Services Most quality outdoor retailers offer professional pack fitting services. Experienced staff can identify fit issues you might miss and often provide valuable loading advice. Many shops let you load test packs with weighted sandbags, simulating real hiking conditions. **Investment Considerations** A quality pack is a 10-15 year investment. Spending $400-600 on a well-fitted pack often proves more economical than replacing cheaper alternatives every few years. Look for manufacturers offering repair services and replacement parts — companies like [Osprey All Mighty Guarantee](AMAZON_LINK) provide lifetime repairs regardless of cause.