Two-in-One Expandable Backpack Collection
Series 2 Medium Expandable Backpack
The minimal look. The soft touch of leather. The surprising lightness on your back. Series 2 is a delight for your senses and a joy to carry. Like all expandable Knack products, this new collection offers intelligent organization for your everyday things plus patent-pending travel function.
Series 1 Medium Expandable Backpack
Our medium expandable backpacks are do-it all bags. Unexpanded, they are great for everyday, around-town carrying. Ready to travel? Expand the patent-pending, hidden suitcase compartment and pack what you need for a couple of days on the road.
Series 1 Large Expandable Backpack
With a spacious everyday compartment and a separate roomy, expandable packing compartment, large expandable Knack Packs have the capacity for whatever you want to bring.
Series 1 Small Expandable Backpack
Our small expandable backpacks are the perfect "around town" backpack size for work and play every day. Need more room for gym clothes or an extra outfit? Just unzip and expand the hidden suitcase compartment and pack it up.
Series 1 Medium Leather Expandable Backpack
Our best-selling Series 1 expandable Knack Pack in soft, luxurious Napa leather. Beautiful, yet surprisingly practical too. Over time, this supple, full-grain leather will develop a warm, rich patina that is unique to you and your backpack.
Knack’s collection of modern expandable backpacks redefines what a professional backpack should be. We started with the premise that days are hectic enough without having to carry several bags at the same time. So, each of our lightweight, modern expandable backpacks not only provide great everyday function, they also offer patent-pending travel function in the same bag. One Bag Life is finally here.