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Cotopaxi Allpa 28L Travel Pack

Cotopaxi

Allpa 28L Travel Pack

Dimensions
18.9 x 11.8 x 9.1 in
Capacity
28 L
Weight
2.62 lb

Product-specific AI-assisted view rendered to scale from verified dimensions.

Fit snapshot

How it fits popular airline rules

Across 5 commonly checked rules, Cotopaxi Allpa 28L Travel Pack has 2 borderline, 3 do not fit.

Fit
0
Tight
2
No fit
3
Unknown
0
Featured ruleFrontier AirlinesRisky

Purchase options

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Fit by airline

One airline rule at a time

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Personal item visual check

Frontier Airlines

Risky

Visual sizer

Bag vs airline rule

Tight fit

Tight fit. Largest overage: 1.1 in.

Scaled fit visualizationTight fit. Largest overage: 1.1 in.Bag size18.9 x 11.8 x 9.1 inRule size18 x 14 x 8 inRule width 14 inRule length 18 inBag width 11.8 inBag length 18.9 in

Tight fit. Largest overage: 1.1 in.

Height

Over by 0.9 in

Bag 18.9 in / Rule 18 in

Width

Spare room +2.2 in

Bag 11.8 in / Rule 14 in

Depth

Over by 1.1 in

Bag 9.1 in / Rule 8 in

  • warning: This bag is treated as a borderline soft-sided fit. Packed bags can bulge.
  • info: Frontier says personal item size may be checked during boarding

Data status

Audited dimensionsAirline-published rule

This preview compares the reviewed bag dimensions against Frontier Airlines's personal item rule.

Product-specific AI-assisted view rendered to scale from verified dimensions.

Frontier fit detailsFrontier Airlines rules

Fit-first product brief

Buying notes

Cotopaxi Allpa 28L Travel Pack is tracked here from manufacturer-published with 18.9 x 11.8 x 9.1 in, 28 L, and 2.6 lb. The key question is whether that published footprint leaves enough margin for real packed shape, airline boxes, and comparable bags.

Cotopaxi Allpa 28L Travel Pack is best read as a personal-item and under-seat backpack travel bag: 2 risky, 3 do not fit across 5 popular personal item checks tracked here. JetBlue, United Airlines, and Delta Air Lines are the avoid list for this bag on the selected rule.

Reviewed dimensions
18.9 x 11.8 x 9.1 in
Capacity
28 L
Weight
2.6 lb
Source basis
Manufacturer-published
Includes
Does not include wheels and handles
Last reviewed
2026-05-28

Fit verdict

  • Primary use case: personal-item and under-seat backpack travel.
  • Across 5 popular personal item checks tracked here: 2 risky, 3 do not fit.
  • JetBlue, United Airlines, and Delta Air Lines do not fit this selected rule without changing bags.
  • Across 5 popular carry-on checks tracked here: 1 fits, 4 risky.

Tradeoffs we can infer

  • Published dimensions do not include wheels or handles; leave extra real-world margin before relying on a tight airline fit.
  • Do not assume packed corners, pockets, or bulging fabric stay inside the listed rectangular dimensions.
  • Manufacturer-published with high confidence is strong enough for comparison, but variant naming still matters at checkout.
  • Soft construction can help only when the bag is lightly packed; it does not change the published size.

Buyer risk notes

  • Within comparable personal item backpack bags in this catalog, capacity is 2.5 L above the category median (25.5 L); empty weight is 0.7 lb above the category median (1.9 lb).
  • 15 inch laptop support is recorded; laptop packing may reduce usable clothing depth even when outside dimensions fit.
  • Cotopaxi and Amazon routes are attached; verify the exact model and colorway because collection-level merchant pages can mix nearby variants.

Shopping route

Current shopping routes include Cotopaxi, Amazon. Some links may earn This Bag Fits a commission. Compare the merchant listing against the reviewed dimensions before buying.

Comparable bags

Osprey Daylite Expandable Travel Pack 26+626 L personal item backpack in the same category.Footprint: 17 x 13 x 6 in vs 18.9 x 11.8 x 9.1 inCapacity: -2 LWeight: -0.8 lbPrice band: Mid vs MidCabinZero Classic Cabin Backpack 28L28 L personal item backpack in the same category.Footprint: 15.4 x 11.6 x 7.9 in vs 18.9 x 11.8 x 9.1 inCapacity: same 28 LWeight: -1.3 lbPrice band: Budget vs MidSamsonite Mother Lode Jr Travel Backpack32 L personal item backpack in the same category.Footprint: 19.8 x 13.3 x 7.5 in vs 18.9 x 11.8 x 9.1 inCapacity: +4 LWeight: +0.6 lbPrice band: Mid vs Mid

Record status

Dimensions and source record

These are official manufacturer dimensions reviewed on 2026-05-28; does not include wheels and handles.

Dimensions
18.9 x 11.8 x 9.1 in
Source basis
Manufacturer-published
Includes
Does not include wheels and handles
Audited dimensions

Bag data

Audited dimensions
Last reviewed
2026-05-28
Dimension confidence
high
Primary source
manufacturer
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