By Dana Okoro, Editorial Reviewer · Published September 14, 2026, 6:03 PM ET
Direct Answer
Loosen backpack straps in reverse of the tightening order: stabilizer straps first, then the sternum strap, then load lifters, then shoulder straps, then the hipbelt last. This sequence prevents the pack from suddenly shifting weight onto one strap while others are still cinched tight.
In plain English
A hiking backpack has several straps, and each one holds part of the weight. When you put a pack on, you usually tighten the hip belt first, the padded belt around your hips, and finish with the small straps near your shoulders and chest. Loosening works best in the opposite order.
The reason is simple. The hip belt carries a big share of the load. If you unclip it first while everything else is still tight, the whole weight suddenly drops onto your shoulders, and a heavy pack can lurch or swing. It is like letting go of the bottom of a heavy box before the person helping you has a firm grip.
So ease the little straps first, then the shoulder straps, and open the hip belt last. Then slide the pack off one shoulder at a time and lower it with both hands instead of letting it drop.
Loosening a loaded hiking backpack, whether to take it off or to fix an over-tight fit, works best in reverse of the tightening sequence rather than loosening straps at random.
The reverse order
Hipbelt stabilizer straps — loosen first, since they only fine-tune a fit that's already set.
Sternum strap — loosen next, releasing tension across the chest.
Load-lifter straps — ease these to reduce the pull drawing the pack toward the shoulders.
Shoulder straps — loosen once the straps above are already slack.
Hipbelt — unbuckle last, since it's carrying most of the load until the very end.
Why order matters here too
Loosening the hipbelt first, before the other straps, can let a heavy pack drop suddenly or swing unpredictably, since the shoulder straps and load lifters are still cinched tight and now taking on weight abruptly. Working in reverse order keeps the load's distribution changing gradually rather than all at once.
Loosening for a mid-hike adjustment
Not every loosening situation means taking the pack off. If the pack feels over-tight mid-hike — commonly after removing a layer, since less bulk under the straps means less room is needed — a small, targeted loosening of just the hipbelt or shoulder straps, without fully undoing the reverse sequence, is usually enough.
Loosening before removing the pack
Before taking a loaded pack off entirely, loosen the shoulder straps and hipbelt enough that the pack can slide off one shoulder at a time without the full weight suddenly transferring to one arm or shoulder. Fully unbuckling the hipbelt before loosening the shoulder straps risks the pack's weight shifting entirely onto the shoulders in the moment before it's off.
Why the order protects your shoulders
Pack makers publish fitting sequences rather than loosening sequences, so the reverse order on this page is practical guidance built on how packs are fitted. Deuter's instructions center the hip fins over the top of the hip bone before the waist belt is secured, and warn that shoulder straps should not be over-tightened because the waist belt should carry the main load.1 Deuter also sets the sternum strap only after back length is correct.1 Undoing that sequence from the top down keeps the hip belt working until the rest of the harness is slack.
How much weight rides on the hip belt at that moment is disputed. Big Agnes aims for about 80% of pack weight on the hips,2 Alpkit says 60 to 80%,3 and the US Army's foot-march manual estimates about 30% on the hips and lower back, with 70% on the shoulders.4 Whichever figure is closer for your pack, releasing the belt first moves that whole share onto the shoulders in one moment.
Loosening on the move
The page notes packs often feel tight after you remove a layer. It helps to know what each small strap does. Load lifters, the short straps running from the top of the shoulder straps to the pack body, work best at a moderate angle: Big Agnes says 45 degrees,2 Deuter 30 to 45 degrees.1 Easing them lets the top of the pack sit slightly farther from your shoulders. The sternum strap only steadies the shoulder straps; Alpkit places it about an inch below the collarbone,3 and loosening it relieves pressure across the chest.
Research gives a reason not to leave straps cranked tight all day. A study of load-carriage discomfort found static strap force was a significant predictor of discomfort, and that the hip region tolerates pressure significantly better than the shoulders.5 Easing the shoulder straps at rest stops, then re-snugging them, shifts that pressure around. A review of soldier load carriage lists rucksack palsy among the common problems of prolonged carrying,6 so numb or tingling hands are a signal to loosen the straps at once, and to see a doctor if the feeling does not return quickly.
Compression straps are a different job
External compression straps are not part of the harness, and they usually do not need loosening before you take the pack off. They squeeze the load so it cannot move around. US Army doctrine says compression straps keep the internal load from shifting and hold it closer to the body,4 and the Appalachian Mountain Club advises cinching them once everything is packed.7 Loosen them only when you need to open the pack or add gear, and tighten them again before you set off, so the load does not slump away from your back.
