PayPal only size for both is medium bomber Kevlar fabric climbing pack these are the X model (with more Kevlar in the fabric).  
$150 each or 250 or both.

The new 3rd generation version of the AK47-X, like the 47, is identical to its predecessor in features and function. The two major differences are a new fabric – 40% Kevlar instead of 28% previously – and an all-welded welded construction, making it fully water-resistant.
There are two feature alterations. The ice-axe carrying system which has been updated to stay abreast of modern tool development (so many have neither adzes nor hammers) and the top access to the main compartment now has a roll-top closure instead of a draw-cord.
The AK47-X is really an AK47 with an X. And what is this X-factor? A floating lid design to increase the load capacity, a configuration preferred by many mountaineers. Apart from this, don’t go looking for any other differences – there aren’t any. 
The AK47-X is available in three back-lengths, and will be available from mid-June 2015.
FEATURES Removable floating lid – for more versatile load optionsRoll-top closing system on main body compartmentExternal lid pocket with welded seamsSide compression straps – quick and easy to fit or remove Oversized back haul loop – easy to grab and clipTop compression strap40 mm webbing waist-belt with low-profile full-sized hip-finsTwo ice-axe holdersStretch wand pockets