Fit

Size guide

Three measurements cover everything we sell. Take them with a soft tape while your pet is standing, and write them down — you will use them again.

Neck

Around the base of the neck, where a collar naturally sits — lower than you think, just above the shoulders. Add two fingers of slack.

Girth

Around the deepest part of the chest, immediately behind the front legs. This is the measurement that decides harness size.

Length

Nose to the base of the tail, with your pet lying stretched out on their side. Add six inches for a bed.

No soft tape? Use a piece of string, mark where it meets, then lay the string flat against a ruler. It is just as accurate. Measure over the coat, not under it — a thick double coat genuinely changes the number.

Harbor Reflective Dog Collar

Measure the neck (A). If you fall between two sizes, take the larger one.

Size	Neck range	Width	Typical breeds
Small	10 – 14 in	3/4 in	Jack Russell, Dachshund, Miniature Schnauzer
Medium	14 – 19 in	1 in	Border Collie, Cocker Spaniel, Beagle
Large	18 – 25 in	1 in	Labrador, German Shepherd, Boxer

Breed names are a rough guide only. The measurement is what matters — two Labradors can be two sizes apart.

Harbor No-Pull Dog Harness

Measure the girth (B). Weight and breed are not reliable predictors here — a whippet and a French bulldog can weigh the same and need different sizes.

Size	Girth range	Neck adjusts	Rough weight guide
Small	16 – 22 in	±4 in	12 – 25 lb
Medium	22 – 28 in	±4 in	25 – 50 lb
Large	27 – 34 in	±4 in	50 – 80 lb
X-Large	33 – 42 in	±4 in	80 – 120 lb

The two-finger check. Once fitted, you should be able to slide two flat fingers under the girth strap and no more. Looser than that and a determined dog can back out of it; tighter and it will rub behind the elbows.

Cloudrest Orthopedic Dog Bed

Measure the length (C) and add six inches. Dogs that curl into a ball can go a size down; dogs that sleep flat out on their side should size up.

Size	External	Internal sleeping area	Suits dogs to
Medium	30 × 22 × 7 in	24 × 17 in	50 lb
Large	36 × 27 × 7 in	30 × 21 in	90 lb

Cloudrest Wool Felt Cat Cave

One size, 17 in external diameter with a 12 in internal floor and an 8 × 7 in opening. Comfortable for cats up to approximately 18 lb. Bonded pairs generally want one each rather than sharing.

Terrace Elevated Feeding Station

Measure your dog’s height at the withers — the ridge between the shoulder blades, with your dog standing square. As a rule the bowl rim should sit level with the bottom of the chest.

Shoulder height	8 in station
Under 16 in	Too tall — feed at floor level instead
16 – 24 in	Correct height
Over 24 in	Usable, but a taller stand would suit better

Wander Expandable Pet Carrier

Your pet should be able to stand up, turn around and lie down flat. Measure length (C) and standing height at the shoulder.

Closed floor area	18 × 11 in
Expanded floor area	18 × 20 in
Internal height	11 in
Maximum pet weight	20 lb

Flying? In-cabin size limits differ by airline and by aircraft, and they change. Check the carrier’s current under-seat dimensions against the closed size of 18 × 11 × 11 in before you book, and never use the expansion in flight.

Still not sure?

Send us the measurement and your pet’s breed and weight at support@accesspet.store and we will tell you which size to order. And if it still comes out wrong, size exchanges are free both ways within 30 days.

Shop the range Read the returns policy