Osprey Siskin Hydration Pack - Molten Red - 12L - 2021 - 2.5L Bladder eBay is used to press cartridge

is used to press cartridge bearings in to bottom bracket cups

9 x 150mm = 480g

Fits down tubes: 38 - 70 mm

Retention system: Now this is where it starts to get interesting

SKS stands for "same key system" so you can make it quick and easy unlock and get riding

Osprey Siskin Hydration Pack - Molten Red - 12L - 2021 - 2.5L Bladder eBay is used to press cartridgeThe Siskin pack strikes the perfect balance between the two extremes of not having enough storage and having too much storage so that you end up weighed down with too much gear. It's somewhat of the Goldilocks of packs as it gives you plenty of room to store and organise your gear but you won't need to hire a Sherpa to get you to the top of the hill. The main compartment has a U zip so you can open it right up and lay it flat to easily access all your