← All gear comparisons

Fjallraven Kajka X-Lätt 45 vs Osprey Sirrus 36

Weight and specs compared for 2026 — and which one to choose.

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

Swipe to see all details.

Spec Fjallraven Kajka X-Lätt 45 Osprey Sirrus 36
Weight 1,190 g · 1.190 kg · 2.62 lb 1,220 g · 1.220 kg · 2.69 lb
Brand Fjallraven Osprey
Category Backpack Backpack
Fjallraven Kajka X-Lätt 45
1,190 g

Lightweight 45L trekking backpack with birch wood frame, one of the lightest wood-frame packs available. Features Vinylon construction with 45-liter capacity fo...

See it in your base weight → Full details →
Osprey Sirrus 36
1,220 g

Women's ventilated 36L pack with AirSpeed back panel.

See it in your base weight → Full details →

Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.

HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.

Fjallraven Kajka X-Lätt 45 vs Osprey Sirrus 36: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

See where both rank against everything else in this category on the lightest backpack page, or browse the full gear weight database.

More backpack comparisons

Fjallraven Kajka X-Lätt 45 vs Black Diamond Beta Light 45L Fjallraven Kajka X-Lätt 45 vs Osprey Talon 44 Fjallraven Kajka X-Lätt 45 vs Black Diamond Speed 40 Fjallraven Kajka X-Lätt 45 vs REI Co-op Flash 45 Fjallraven Kajka X-Lätt 45 vs Osprey Exos 48 Fjallraven Kajka X-Lätt 45 vs Fjallraven Abisko Hike 35