Here is an Arcteryx Cierzo 25 backpack for sale. I bought it new from Moosejaw. It packs into its own lid. I took it on one trip only and used it as a day pack. It doesn't quite work for me so I am selling it. It is in great conidtion--no rips, tears, damage, odors or any other defects. MSRP is $99. I am selling for $70 shipped CONUS. Paypal gift or add fees. Here is the description from Arcteryx' website:

DESCRIPTION
Pared down to the essentials, this go-anywhere alpine pack is for super-minimalists who make every gram count. Perfect for light and fast blitzes from an alpine base camp, the entire pack stows into its lid pocket. The exterior elasticized shock cord lashing system also works to compress the pack's volume, ensuring a trim and tidy profile. The top-loading lid snaps securely in place with a single-point buckle. This pack is ideal as a secondary pack on alpine expeditions, backcountry treks, or kayaking adventures.

FULL FEATURE LIST
Technical Features
Lightweight
Highly compressible
Construction
Removable dual-density framesheet
Zippers & Fly Configuration
WaterTight™ external zippers
Corded zipper-pulls reduce noise and are easy to grab
Pack Pocket Configuration
Top pocket with key clip
Internal security pocket
Main compartment pocket
Pack Suspension Configuration
Removable sternum strap
Ultra-light shoulder straps
2 cm/ 0.8 in webbing hipbelt
Pack Loading & Closure Configuration
Top loading
Drawcord closure
Lid closure with single buckle to secure pack contents
Pack Lid Configuration
Stows in top lid
Pack Compression Strap Configuration
Static compression cord system
Pack Attachment Configuration
Front and back attachment loops
Two ice axe loops
Velcro® axe keepers
Micro daisy chains

Photos are below: