Medium / Large fits packs between 1500 and 2300 cu in or 25L to 38L according to their website.
1552180
I have the Medium and it fits my Ridge Runner (22L) snug. you might want to look at a Kelty cover, the run large.
758684
I dont know the exact dimensions of the pack, but i would say its a medium for sure. Is got some room. great pack to btw
104767
I'm answering because previous answers were incorrect and new buyers will be misled. Description says X-Large is 14 x 34 x 15", and that matches the 110 liter capacity. Sizes given previously are for the much smaller 'Large' duffel, rated at 70 liters capacity. There are about 61 cubic inches in a liter, so this is easily confirmed.
1375042
Small (Fits dogs 11"-14" long), Medium (Fits dogs 15"-17" long) or Large (Fits dogs 18"-21" long), X-Large (Fits dogs 22"-24" long)
232852
I have a Kelty 44 and a medium fits it just right. I would guess that it would take a large cover to cover a 65L pack
1173553
The size is obvious. The Medium bag allows me, as a guy, to pack an extra pair or slacks, shorts, swimsuit and couple of shirts along with iPad, chargers, toiletries, and light rain coat. And if I squeeze, an extra pair of shoes. My daughter has the large and she can get 4 days travel out of it.
1575428
No not that much. Packs not that big. Maybe 20-25lb. Quality craftsmanship is good but design of pockets for small gear is not good. I had to use my own water bladder. I didn't think the pack was worth the price. Scott
1913045
the 2100 is cubic inches. Metric and inches - conversion chart for backpack volume When shopping for a backpack, it's useful to know the pack size you are after in metric, typically liters, and US sizing, typically cubic inches. Here's a conversion table to assist you (cubic inches a rounded off). Metric - US 20 liters - 1,200 cubic inches 30 liters - 1,800 cubic inches 40 liters - 2,400 cubic inches 50 liters - 3,000 cubic inches 60 liters - 3,700 cubic inches 70 liters - 4,300 cubic inches Some pack volume rules of thumb: For a one day summit pack (Mt. Hood), look for something around 40 liters, or 2500 cubic inches. For packing light on a 1 or 2 night climb, consider a pack in the 50 liter range, or 3,000 cubic inches.
48135
It's a really big pocket that runs the length and width of the bag on the inside of the main part of the pack. I use a 2L bladder and there's plenty of extra room. I would bet a 3L would be just fine.
548137
This pack has a large range of adjustment. I am also 5'7" & medium build. I wear it when I'm enduro riding & it fits just fine over my body armor & jersey. Space wise I carry the water reservoir, tyre changing equipment, puncture repair kit & hand pump, energy bars, mobile phone...etc & there is still plenty of room to spare.
1177473
2.25 or (1/4") x 150 ....they got alot of choices on here, however the quantity of the packs is alot. Not sure how many you go through.
100507
http://agreendog.com/products.html small 15-30 lbs, medium 30-50 lbs, large 50-75 lbs, X-large (75+ lbs)
499393
I would say medium. Even if you get the large you can tighten it all around to make it work. Medium can fit up to 65-70 lbs.
223267
We have both a medium kelty sack maximum size is 20x38 cm or 8x15 inches. The large is 25x38 cm or 10x18 inches. Large enough to fit a long sleeping bag.
176508
We bought the large and it's the 35L. Medium is 25L. Don't buy small, not worth it. Can be for kids or adult.
1986319
Unfortunately I can not give you the dimensions as I do not know. However, if you are looking for a pack that can hold a lot of gear. That is it. If I had to venture a guess on size, the main compartment can hold between 3500 to 4000 cu.in. of gear. The sleeping compartment can hold a 2man tent and compact sleeping bag or two plus toiletries. The quick access pocket has room for anything you want easy access for, such as snacks, first aid kit, paperwork and electronics. Will hold a full size I pad mini. The flap has a waterproof pocket good for maps and anything you want to not get wet. Hope this helps. Unfortunately I can not give you the dimensions as I do not know. However, if you are looking for a pack that can hold a lot of gear. That is it. If I had to venture a guess on size, the main compartment can hold between 3500 to 4000 cu.in. of gear. The sleeping compartment can hold a 2man tent and compact sleeping bag or two plus toiletries. The quick access pocket has room for anything you want easy access for, such as snacks, first aid kit, paperwork and electronics. Will hold a full size I pad mini. The flap has a waterproof pocket good for maps and anything you want to not get wet.... » Read More Unfortunately I can not give you the dimensions as I do not know. However, if you are looking for a pack that can hold a lot of gear. That is it. If I had to venture a guess on size, the main compartment can hold between 3500 to 4000 cu.in. of gear. The sleeping compartment can hold a 2man tent and compact sleeping bag or two plus toiletries. The quick access pocket has room for anything you want easy access for, such as snacks, first aid kit, paperwork and electronics. Will hold a full size I pad mini. The flap has a waterproof pocket good for maps and anything you want to not get wet. Hope this helps. « Show Less
1774878
This bag has an attached daypack. The overall size of the bag is 55L which is broken up into: a 40L main pack and a 15L day pack.