Although not specifically designed as a winter sports pack, the Sprinter XT has virtually everything you need for a day's riding.
There's 22-litres of storage space which is easily accessed through a wide zippered opening in the main section (which also has a zippered internal security pocket), along with equally easy access to a small zippered external goggles/sunglasses pocket and an expandable mesh outer pocket where you can stuff a spare layer and suchlike.
On top of all this you also get two side mesh pockets and two small zippered pockets on the hip belt, so there's no shortage of places to store your gear.
But best of all perhaps is the three-litre 'Big Zip' hydration reservoir which comes with the Sprinter (making it pretty good value for money). This again is easily stowed in its own rear zippered pocket, which has an easy-to-use retention system, and the hose is easily kept out of the way thanks to an additional magnetic retention system on the chest strap (bear in mind though that you'll probably need to buy Platypus' bite valve and drink tube insulator to prevent it from freezing up in cold conditions).
We've actually been using the 'Big Zip' system for over two years and especially like the ease with which you can fill and clean the reservoir.
There are useful attachment points for stuff like helmet, ice axe and ski poles, and we've always found the padded mesh suspension system that Platypus use in the harness to be comfortable and ergonomically efficient.
So, despite not being a winter pack per se the Platypus Sprinter XT 25 will more than adequately fill that role.
