Size Guide

Use a soft measuring tape and measure your pet standing. Between sizes? Size up — comfort first. Every relevant product page also shows this guide next to the add-to-cart button.

Apparel (coats, sweaters, clothes)

Size	Back length	Chest girth	Neck girth	Typical weight
XS	8 in	13–15 in	9–11 in	4–8 lb
S	10 in	15–18 in	11–13 in	8–15 lb
M	12 in	18–22 in	13–16 in	15–30 lb
L	14 in	22–26 in	16–19 in	30–50 lb
XL	16 in	26–31 in	19–22 in	50–75 lb
XXL	18 in	31–36 in	22–25 in	75–100 lb

How to measure: back = base of neck to base of tail · chest = widest point behind the front legs · neck = where the collar sits.

Collars & Harnesses

Size	Neck girth	Chest girth	Typical weight
S	10–14 in	16–22 in	10–25 lb
M	14–18 in	22–28 in	25–55 lb
L	18–24 in	28–36 in	55–90 lb

How to measure: neck = where the collar naturally sits, with room for two fingers underneath · chest = widest point behind the front legs.

Beds & Mats

Size	Sleep surface	Suits pets up to
S	~24 in	25 lb
M	~30 in	45 lb
L	~36 in	70 lb
XL	~42 in	100 lb

How to measure: length from nose to base of tail in their usual sleeping position, then add 6–8 in of stretch room.

Still unsure? Email support@loafandwag.com with your pet's measurements and the product you're eyeing — we'll size it for you.