Purchased this pack in the fall and have used it for ski touring over the winter. Really like the top loading option (didn't need 40 L pack but only one in the Kresta series that allows for top loading). Find the helmet cover challenging to use in colder weather. Clips were hard to get around the small loops provided. Would strongly suggest the helmet cover be in a pocket on the main pack so if you leave the top lid behind to reduce weight you don't forget the helmet cover! Also secured to the pack then only need to clip 2 corners down for securing helmet in place. Loved the ability to carry additional gear when needed for glacier travel or colder weather as well as ease of shrinking the pack when didn't need the full 40 L capacity. Pack carries very well and is very comfortable. 3 metre probe just fits into the back pocket, could use another 1/2" height on the back access pocket so easier to get probe set in.