There’s nothing worse than setting up camp and finding your gear has got wet and knowing that you’re going to be wearing damp gear or, worse, climbing into a wet sleeping bag. That’s why we only stock the best quality lightweight dry bags. These Exped Bags have been trusted companions on many a adventure and as yet, they’ve never let us down. 
 
The Medium is more than capable of holding a SPIII Sleeping bag.
I use the XS for a down jacket.
 
These Lightweight and waterproof drybags with a convenient transparent window for excellent overview of contents. The fully transparent and UV resistant TPU film makes it easy to see what has been packed. Taped seams and equipped with grab handle, quick release buckle and D-ring. 
 
4 Pack consists of the 4 sizes XS, S, M and L.