
(Used) Backpack

Regular price
$69.00
Sale price
$41.40
Save 40%
/
$41.40
View Size Guide >

CHEST
(circumference)
NECK
(circumference)
SMALL
16 - 22"
40.5 - 57cm
11.5 - 14.5"
29 - 37cm
MEDIUM
23 - 30"
58 - 76cm
14 - 20"
35.5 - 46cm
LARGE
30 - 42"
76 - 106cm
20 - 28"
51 - 71cm
Not sure what size fits your pup?
Take our 20 sec size finder quiz
>
Question 1 of 4
What is your dog's chest circumference?
How to measure: Wrap a measuring tape around the widest part of your dog's chest, just behind the front legs.
16-22"
40.5 - 57cm
23-30"
58 - 76cm
30-42"
76 - 106cm
What is your dog's neck circumference?
How to measure: Measure at the widest part of the neck where the harness will sit, not the collar area.
11.5-14.5"
29 - 37cm
14-18"
35.5 - 46cm
20-28"
51 - 71cm
How much does your dog weigh?
< 25lbs
< 11.5kg
25-50lbs
11.5 - 22.5kg
> 50lbs
> 22.5kg
What type of activity will your dog do most while wearing the harness?
Everyday walks
Hiking & off-leash adventures
Training or pulling
Your best fit:
Medium
Chest (circumference):
Neck Opening (circumference):
Belly Panel Length:
Top Panel Length:
Still unsure? Measure your pup's belly panel length and top panel length and reference the chart above.
Make sure you can slip two fingers between the harness and armpit for a snug, comfy fit.
If your pup falls between sizes or they are still growing or filling out, we recommend sizing up!
View Size Guide

CHEST
(circumference)
NECK OPENING
(circumference)
SMALL
16-22"
(40.5 - 57 cm)
11.5-14.5"
(29 - 37 cm)
MEDIUM
23-30"
(58 - 76 cm)
14-18"
(35.5 - 46 cm)
LARGE
30-42"
(76 - 106 cm)
20-28"
(51 - 71 cm)
This Second Track item will be a mystery color, slightly used, but still has lots of life left in it. You might find a few pieces of fur or a bit of dirt on it, but your dog won't mind. If you won't be happy with any color backpack, head on over to our full-price Backpacks, where you can choose whatever color you want!
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SECOND TRACK items are FINAL SALE - no returns or exchanges.
Product Details
- Built-in harness for stability and back-mounted D-ring leash attachment
- Top handle to grab your pup if needed
- Four adjustment points to fit the pack perfectly to your pup
- Two saddlebags with 4 total pockets - 2 on each side
- Approximate total capacities & item weight:
- Small - 5L, 9.5oz
- Medium - 8L, 12.9oz
- Large - 12L, 14.5oz
- Easy-to-use, built in poop bag dispenser fits one poop bag roll
- Interior pull tabs for keys, etc
- Stitched webbing attachment points for carabiners, bowls, or other accessories
- Velcro keepers on all straps - no hanging strap tails!
- Constructed of durable, water resistant cotton/poly blend fabric
- Wash on ‘gentle’ setting with low or no heat and hang to dry
Sizing
Recommended Use
We recommend that initially your dog carries no more than 10% of their body weight, including the contents of the backpack and the pack itself. If your dog is new to backpacks, we suggest starting with a lighter load and adding weight over time. Canned veggies make for a great trial run around your neighborhood!