Jeff

Julie, We have the replacement Distance Tech Tip. It doesn't look too damaged to replace. It does take some work and a heat gun to get that off.

Jen, Go with the 37.5 to give your toes adequate space for the down.

Russell, The straps have a velcro adjustment on the inside of the strap. Can't say on replaceability, we do not carry extra straps.

Rick, yes any Salomon pack. Has a universal mount for most packs.

Andy, 125cm should be good. Using the Resort pole method of holding your forearm parallel to the ground is a good start.