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REI

Trail 25 Pack

Include as lower-cost outdoor personal-item option. | REI listing shows 25L and 1 lb. 13 oz. | Launch-only softness, compressibility, opening, bottle-pocket, and price fields inferred from category and model.

Dimensions
18 x 13 x 8 in
Capacity
25 L
Weight
1.81 lb
Last reviewed
2026-05-29
Source-linked dimensions

Bag data

Source-linked dimensions
Last reviewed
2026-05-29
Dimension confidence
high
Primary source
retailer

Fit by airline

Airline fit results

Carry-on

REI Trail 25 Pack

Risky

REI Trail 25 Pack is over the published carry-on dimensions, but the soft construction may make it a borderline option if lightly packed. Treat this as a fee-risk result.

Visual sizer

Bag vs airline rule

Tight fit

Tight fit. Largest overage: 0.1 in.

Dimension-only silhouette
Scaled fit visualizationTight fit. Largest overage: 0.1 in.Bag size18 x 13 x 8 inRule size21.7 x 15.7 x 7.9 inRule width 15.7 inRule length 21.7 inBag width 13 inBag length 18 inDepth: Bag 8 in / Rule 7.9 in

Tight fit. Tightest spare room: 2.7 in.

Height

Spare room +3.7 in

Bag 18 in / Rule 21.7 in

Width

Spare room +2.7 in

Bag 13 in / Rule 15.7 in

Depth

Over by 0.1 in

Bag 8 in / Rule 7.9 in

  • warning: This result uses medium-confidence source data.
  • warning: Bag dimensions are not directly manufacturer-published for this launch record.
  • warning: This bag is treated as a borderline soft-sided fit. Packed bags can bulge.

Data status

Source-linked dimensionsSource-linked rule

Rendered from the dimensions shown here. Airline staff and packed shape can still affect the real-world outcome.

Dimension-only silhouette rendered from verified dimensions; no approved product image is available yet.

Bag
18 x 13 x 8 in
Rule
21.7 x 15.7 x 7.9 in
Risk
48/100
Confidence
medium

Margins: length 3.7 in, width 2.7 in, depth -0.1 in.

Main issue: depth by 0.1 in.

Personal item

REI Trail 25 Pack

Does not fit

REI Trail 25 Pack is larger than the published personal-item dimensions. Pick a smaller alternative for this airline rule.

Bag
18 x 13 x 8 in
Rule
13 x 9.8 x 7.9 in
Risk
92/100
Confidence
medium

Margins: length -5 in, width -3.2 in, depth -0.1 in.

Main issue: length by 5.0 in, width by 3.2 in, depth by 0.1 in.

Carry-on

REI Trail 25 Pack

Fits

REI Trail 25 Pack fits the published carry-on dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
18 x 13 x 8 in
Rule
21.7 x 13.8 x 9.8 in
Risk
8/100
Confidence
medium

Margins: length 3.7 in, width 0.8 in, depth 1.8 in.

Personal item

REI Trail 25 Pack

Risky

REI Trail 25 Pack is over the published personal-item dimensions, but the soft construction may make it a borderline option if lightly packed. Treat this as a fee-risk result.

Bag
18 x 13 x 8 in
Rule
17.7 x 13.8 x 7.9 in
Risk
48/100
Confidence
medium

Margins: length -0.3 in, width 0.8 in, depth -0.1 in.

Main issue: length by 0.3 in, depth by 0.1 in.

Carry-on

REI Trail 25 Pack

Fits

REI Trail 25 Pack fits the published carry-on dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
18 x 13 x 8 in
Rule
21.7 x 15.7 x 9.1 in
Risk
8/100
Confidence
medium

Margins: length 3.7 in, width 2.7 in, depth 1.1 in.

Carry-on

REI Trail 25 Pack

Fits

REI Trail 25 Pack fits the published carry-on dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
18 x 13 x 8 in
Rule
21.7 x 15.7 x 9.1 in
Risk
8/100
Confidence
medium

Margins: length 3.7 in, width 2.7 in, depth 1.1 in.

Carry-on

REI Trail 25 Pack

Fits

REI Trail 25 Pack fits the published carry-on dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
18 x 13 x 8 in
Rule
21.7 x 15.7 x 9.1 in
Risk
8/100
Confidence
medium

Margins: length 3.7 in, width 2.7 in, depth 1.1 in.

Carry-on

REI Trail 25 Pack

Fits

REI Trail 25 Pack fits the published carry-on dimensions for this rule. Still measure the packed bag, including handles and wheels.

Bag
18 x 13 x 8 in
Rule
21.7 x 15.7 x 9.1 in
Risk
8/100
Confidence
medium

Margins: length 3.7 in, width 2.7 in, depth 1.1 in.