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CATALYST OPTIONS
Dual Stay Framesheet: dual aluminum stays replace the standard single stay for increased load control and stability. Adds: ~3.0 oz / $10.00
Internal Stash Pocket: ~5 X 8 zippered mesh pocket for stashing valuables --- car keys, personal identification, etc., removable. Adds: ~1 oz / $5.00
Hydration Sleeve: removable internal hydration sleeve. 9" X 17". Accomodates all 2 L bladders. A few 3 L bladders will fit. Drinking Tube exit ports on both sides of the Catalyst allow for easy tube management. Adds: ~1.3 oz / $5.00
H20 Bottle Holsters: shock cord/barrel lock attachments threaded to shoulder strap. Right or left, both removable. Holds 16 oz traditional bicycle bottles snugly. Adds: ~.40 oz / $2.00 each (Bottles not included)
Handloops: removable 3/4" webbing loops for resting hands. Nice for folks who do not use trekking poles. Adds: ~.80 oz / $2.00 each
CIRCUIT OPTIONS
Internal Stash Pocket: ~5 X 8 zippered mesh pocket for stashing valuables --- car keys, personal identification, etc., removable. Adds: ~1 oz / $5.00
Hydration Sleeve: removable internal hydration sleeve. 9" X 17". Accomodates all 2 L bladders. A few 3 L bladders will fit. Drinking Tube exits ports on both sides of the Circuit allow for easy tube management. Adds: ~1.3 oz / $5.00
H20 Bottle Holsters: shock cord/barrel lock attachments threaded to shoulder strap. Right or left, both removable. Holds 16 oz traditional bicycle bottles snugly. Adds: ~.40 oz / $2.00 each (Bottles not included)
Handloops: removable 3/4" webbing loops for resting hands. Nice for folks who do not use trekking poles. Adds: ~.80 oz / $2.00 each
CONDUIT OPTIONS
Internal Backpad: New for '07. Removeable 1/4" foam backpad positioned in the interior pad sleeve. Provides additional comfort, and handy if you use the Conduit for dayhiking. Does not enhance load transfer. Adds: ~1.1 oz / $5.00
Internal Stash Pocket: ~5 X 8 zippered mesh pocket for stashing valuables --- car keys, personal identification, etc., removable. Adds: ~1 oz / $5.00
Hydration Sleeve: removable internal hydration sleeve. 9" X 17". Accomodates all 2 L bladders. A few 3 L bladders will fit. Drinking Tube exits ports on both sides of the Circuit allow for easy tube management. Adds: ~1.3 oz / $5.00
H20 Bottle Holsters: shock cord/barrel lock attachments threaded to shoulder strap. Right or left, both removable. Holds 16 oz traditional bicycle bottles snugly. Adds: ~.40 oz / $2.00 each (Bottles not included)
Handloops: removable 3/4" webbing loops for resting hands. Nice for folks who do not use trekking poles. Adds: ~.80 oz / $2.00 each
RELAY OPTIONS
Internal Stash Pocket: ~5 X 8 zippered mesh pocket for stashing valuables --- car keys, personal identification, etc., removable. Adds: ~1.1 oz / $5.00
Hydration Sleeve: removable internal hydration sleeve. 9" X 17". Accomodates all 2 L bladders. A few 3 L bladders will fit. Drinking Tube exits ports on both sides of the Conduit allow for easy tube management. Adds: ~1.4 oz / $5.00
H20 Bottle Holsters: shock cord/barrel lock attachments threaded to shoulder strap. Right or left, both removable. Holds 16 oz traditional bicycle bottles snugly. Adds: ~.40 oz / $2.00 each (Bottles not included)
Handloops: removable 3/4" webbing loops for resting hands. Nice for folks who do not use trekking poles. Adds: ~.80 oz / $2.00 each
Hipbelt Pockets: removable hipbelt pockets. Provide easy access for snacks, camera, and other essentials. Zip Closure. 3 points of attachment insure stability. ~4" (h) x ~5" (w) x ~1.5" (d). ~30 cu in apiece. Adds: 1 oz/ $8 each

AMP OPTIONS
Modular Front Pocket: removeable front pocket. Securely fastens to the Amp with (6) points of contact. Does not restrict pack body compression. Eliminates use of ice axe loop. ~11"(h) x 8"(w) x 4"(d). Adds: ~1.7 oz / ~350 cu in / $12.00
Internal Stash Pocket: ~5 X 8 zippered mesh pocket for stashing valuables --- car keys, personal identification, etc., removable. Adds: ~1 oz / $5.00
Hydration Sleeve: removable internal hydration sleeve. 9" X 17". Accomodates all 2 L bladders. A few 3 L bladders will fit. Drinking Tube exits ports on both sides of the Amp allow for easy tube management. Adds: ~1.3 oz / $5.00
Hipbelt Pockets: removable hipbelt pockets. Provide easy access for snacks, camera, and other essentials. Zip Closure. 3 points of attachment insure stability. ~4" (h) x ~5" (w) x ~1.5" (d). ~30 cu in apiece. Adds: 1 oz/ $8 each