# Osprey Atmos AG 65 vs Hyperlite Mountain Gear Southwest 55: specs and price compared

A sourced, side-by-side comparison of the Osprey Atmos AG 65 (Osprey) and Hyperlite Mountain Gear Southwest 55 (Hyperlite Mountain Gear) among backpacking packs. Osprey Atmos AG 65 is the cheaper of the two at $370.

## Side by side

| Spec | Osprey Atmos AG 65 | Hyperlite Mountain Gear Southwest 55 |
| --- | --- | --- |
| US price | $370 | $399 |
| Brand | Osprey | Hyperlite Mountain Gear |
| Released | — | 2025 |
| Capacity liters | 65 | 55 |
| Weight grams | 2070 | 874 |
| Max load (kg) | 18 | — |
| Frame type | internal | internal |
| Torso range (cm) | — | — |
| Material denier | 210 | 200 |
| Num external pockets | 8 | — |
| Hydration compatible | Yes | Yes |
| Rain cover included | Yes | No |
| Access type | top-bottom | top |
| Ventilated back | Yes | No |

## Key differences

- Capacity liters: Osprey Atmos AG 65 65 vs Hyperlite Mountain Gear Southwest 55 55
- Weight grams: Osprey Atmos AG 65 2070 vs Hyperlite Mountain Gear Southwest 55 874
- Material denier: Osprey Atmos AG 65 210 vs Hyperlite Mountain Gear Southwest 55 200
- Rain cover included: Osprey Atmos AG 65 Yes vs Hyperlite Mountain Gear Southwest 55 No
- Access type: Osprey Atmos AG 65 top-bottom vs Hyperlite Mountain Gear Southwest 55 top
- Ventilated back: Osprey Atmos AG 65 Yes vs Hyperlite Mountain Gear Southwest 55 No

## Sources

- Osprey Atmos AG 65: https://www.manua.ls/osprey/atmos-ag-65/manual (manua.ls, verified 2026-07-11)
- Hyperlite Mountain Gear Southwest 55: https://hyperlitemountaingear.com/products/southwest (hyperlitemountaingear.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/backpacking-packs/osprey-atmos-ag-65-vs-hyperlite-southwest-55/
Cite: Per The Front Desk Review, Osprey Atmos AG 65 ($370) vs Hyperlite Mountain Gear Southwest 55 ($399) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/backpacking-packs/osprey-atmos-ag-65-vs-hyperlite-southwest-55/
License: CC BY 4.0.