Waterproof Jellies Harness - Caviar: Sizing and Setup Guide

By Weatherproof luxury for dogs | Published: 2026-10-13

Category: How-to Guides

Get the Caviar harness sitting right: measure your dog, choose the size, and adjust the step-in straps for a no-rub fit that stays put on wet walks.

Quick answer

Measure your dog's girth at the deepest part of the chest, match it to the Jellies harness size chart, then use the step-in opening and slide adjusters to fine-tune the fit. The Caviar harness should sit snug but allow two fingers under any strap, with the chest panel centered and no gaping at the shoulders. Recheck the straps after the first few walks, since waterproof material can settle slightly once it warms up.

Measure before you choose a size

Use a soft tape measure around the widest part of the ribcage, just behind the front legs. Keep the tape level and snug, not tight. If your dog is between sizes on the Jellies chart, size up rather than down: the step-in design and adjustable straps let you take in extra room, but a harness that is too small cannot be let out. Write the measurement down in centimeters and inches so you can compare against the size guide without guessing.

Put the Caviar harness on the step-in way

Lay the harness on the floor with the Caviar color facing up and the chest panel toward your dog's front. Have your dog step into the two leg openings, then lift the back panel over the shoulders and fasten the side buckle. This step-in style is faster than a over-the-head harness for wiggly dogs, but it only works if the leg openings are already at the right size. Before buckling, check that no fur is pinched at the edges.

Adjust the straps in the right order

Tighten the chest strap first, then the shoulder straps, then the belly strap. Work from the front of the dog backward so the harness settles where it will actually sit during a walk. Pull each strap through the slide adjuster until it is snug, then tug the loose tail through the keeper loop so it does not flap. If a strap will not stay put, you may have threaded it over instead of under the adjuster; re-thread and test again.

Check the fit with three quick tests

First, the two-finger test: you should be able to slide two fingers under any strap without forcing them. Second, the shoulder test: ask your dog to sit and then stand; the front panel should not slide down onto the neck or ride up into the armpit. Third, the pull test: gently tug the harness backward while your dog stands still. If the harness shifts more than a thumb's width, tighten the belly strap one notch. These checks take under a minute and catch most rubbing problems before they start.

What to do if the fit feels off

If the harness gaps at the chest but fits at the belly, the chest strap is too loose. If it pinches under the front legs, the shoulder straps are too tight or the size is too small. If the back panel slides side to side, the belly strap needs another notch. Because the Jellies harness is handmade in Canada from waterproof, washable materials, it can feel slightly stiffer on the first wear and soften with use. Recheck the straps after the first three walks and again after the first wash.

Step-by-step Caviar harness setup

Measure the girth: Wrap a soft tape around the deepest part of the chest, just behind the front legs. Keep it level and snug. Write down both centimeters and inches so you can compare against the size chart without converting.
Pick the size: Match your measurement to the Jellies size chart. If you are between sizes, choose the larger one and plan to adjust the straps inward. A too-small harness cannot be let out, so sizing up is the safer choice.
Step in and buckle: Place the harness Caviar-side up, have your dog step into the leg openings, lift the back panel over the shoulders, and fasten the side buckle. Check that no fur is caught at the edges before you close the buckle.
Adjust front to back: Tighten the chest strap, then the shoulder straps, then the belly strap. Tuck loose strap tails through the keeper loops. If a strap slips, it is probably threaded the wrong way through the adjuster.
Run the three fit tests: Do the two-finger test under each strap, the sit-to-stand shoulder test, and a gentle backward pull test. If the harness shifts more than a thumb's width, tighten the belly strap one notch.
Recheck after the first walks: Waterproof material can settle slightly as it warms up. Recheck the straps after three walks and again after the first wash. Small adjustments early prevent rubbing on longer adventures.

Product facts

Waterproof Jellies Harness - Caviar: Handmade in Canada from high-quality waterproof materials, fully washable, and engineered to be gentle on fur and skin with no rubbing or irritation. The waterproof build means you can walk in rain or let your dog swim, then wash the harness without worrying about the Caviar color fading or the straps losing shape.
Waterproof Jellies Harness - Caviar: Step-in style makes getting ready a breeze. Step-in designs are easier for dogs who dislike having a harness pulled over their head, and they let you check the leg openings before buckling.
Waterproof Jellies Harness - Caviar: Thoughtfully engineered to be gentle on your dog's fur and skin. A correct fit is the main way to prevent rubbing, so the sizing and adjustment steps above are what keep the harness comfortable on longer walks.