Custom Expandable Cat Carrier Backpack with Mesh Tunnel

This custom expandable cat backpack has a side-opening mesh tunnel for use when the bag is set down, plus shoulder straps for carrying with the tunnel closed. The blue body and brown-orange trim are the reference design. For a pet brand choosing this model, the important details are the connection between the two spaces and how neatly the tunnel packs away—not just how large it looks in an open photo.

When to choose a backpack with a mesh tunnel

Choose this layout if your range needs a backpack that opens out to one side during supervised stops. Allow room beside the bag for the whole tunnel. If the intended setting is a narrow floor area, compare the expanded footprint before choosing it over a fixed-size carrier.

Assess the closed main compartment separately from the extended area. Extra space while stationary is not extra carrying capacity, and a pet's weight alone does not establish fit. Check the usable space with the base mat in place, including headroom and room to turn.

Reference model details

Item	Reference specification
Closed external size	34 cm wide × 26 cm deep × 37 cm high
Net weight	Approx. 1.63 kg
Outer material	PVC-coated Oxford fabric
Extension	Side-opening mesh tunnel with an approximately 30 cm extension
Measured main-compartment capacity	Approx. 32 L for the reference model
Pet-weight reference	Cats 7–8 kg; small puppies up to 6 kg. Check body dimensions and fit in the closed sample as well as weight.
Other details	Zippered top opening, mesh panels, removable base mat, internal tether, padded shoulder straps and rear luggage strap

These are reference specifications. Confirm the finished sample and the agreed production specification before placing an order.

Five checks before approving the sample

1. Measure the connecting opening. Check the clear opening between the main compartment and tunnel, not just the outer ring. Look for folded edges, zipper tape or a step at the floor that reduces the passage.
2. Check the whole expanded footprint. Set the empty bag on a level surface and open the tunnel fully. Measure the space it occupies beside the bag and inspect the middle of the tube for narrowing or bunched mesh.
3. Agree what supports the tunnel floor. Check where the main base mat ends and whether any separate tunnel mat is included in the quotation. Do not assume the main mat covers the extension.
4. Fold and close the empty bag. Follow the sample's folding sequence, keeping mesh clear of the zipper. If closing takes force, stop and check the fold. Inspect whether the stored tunnel projects into the main compartment or the carrying side.
5. Try the closed carrying arrangement. With the tunnel packed away, use non-breakable mock contents at the proposed load to check the handle, shoulder-strap adjustment and access openings. Then set the bag down and repeat the opening sequence. Do not use an animal for folding or zipper tests.

Open the tunnel only with the bag stationary. An internal tether is an additional restraint, not an escape-proof enclosure; it does not replace closed zippers and supervision.

Logo work and changes to the reference design

Logo orders in the blue reference color start at 100 pieces in that color. Color or material changes start at 300 pieces. Changes to the tunnel or body layout need a separate sample review.

For a branded version, mark your preferred logo position on a product photo and send the artwork, quantity and destination. We can review the position against the mesh, pockets and folding areas before choosing a logo method. Keeping the existing body layout gives us a starting point for the quotation.

If you need a different fabric, color, tunnel length or opening size, list those changes separately. A longer tunnel can change the folded bundle. Check the folded size and connection on the revised sample rather than judging it from a drawing alone. Confirm the final configuration and production timing in the quotation.

Include the bag, base mat, tether, any extra tunnel insert and packaging as separate lines in your specification so that quotations cover the same configuration. See our sample order guide and custom order process before signing off the sample.

Compare other layouts in our custom pet carrier bags and backpacks, or send this model with your logo and modification list for a quotation.