5/8" or 3/4" Leash Coupler

Collar Sizing Information

Here is our complete guide to sizing for our SUMMIT+SEA & Nautical Rope Collars. Please use our contact page to email us with any questions.

Measurement A: Measure around the head at it's thickest part, this is usually around the jaw and up around the ears.

Measurement B: Measure around the neck where you want your collar to sit relaxed. Add two fingers under the tape measure for added comfort room and be sure the tape measure is not too tight.This is your neck measurement with the comfort room needed in a collar.

Measure with a soft tape measure. If you don't have a tape measure, you can also use a shoestring and measure it with a ruler/yardstick afterwards. Do NOT measure a current collar to get this collar size.

SLIP COLLAR and NON-ADJUSTABLE MARTINGALE COLLARS:

Measure A and B, as seen in the photo- For this style collar, the collar will need to be large enough to slip over the head in order to put the collar on so measurement A is necessary to ensure the collar will be large enough to use. If the head measurement is larger than the neck measurement, the collar will need to be sized according to the head measurement. As a general rule, the collar should be sized .5" - 1" larger than the largest measurement to ensure a good fit. Fluffy dogs may need more than an inch extra if their neck measurement is larger than their head measurement. 

For Nautical Rope Collars, add two inches or more to the largest measurement. The ropes round shape makes it fit tighter than a flat collar of the same length therefore it will need to be sized up at least two inches. Small dog collars of 1/4" and 3/8" size rope will need to be sized up one inch instead of two inches.

SUMMIT+SEA BUCKLE COLLAR:

Measure part B in the photo, where you would want your collar to rest. This is usually close to the base of the neck but be sure you are above the shoulders. You do not want your collar resting on the shoulders. Our Buckle Style Collars are adjustable up to two inches and holes are spaced .5" apart. We recommend the collar size with your dogs neck measurement on the smaller side up to the middle hole. For Example: Your dogs neck measures 16.5". A 16-18" size collar will fit nicely. Please keep coat length/thickness in mind as fluffier dogs may need extra length to accommodate their coat. Another example: Your dog's neck measures 20", a 20-22" collar will fit nicely as well as a 19-21" collar.

OPENING CLASP NAUTICAL ROPE COLLAR:

Measure part B in the photo, where you would want your collar to rest. This is usually close to the base of the neck. This style collar is not adjustable so precise measurement is important. The round shape of the rope makes this collar fit tighter than a flat collar of the same length so it is important to size up. As a general rule, add two inches to the neck measurement for large dog 1/2" rope collars. *For small dog 1/4" & 3/8" rope collars, size up one inch instead of two inches.

SUMMIT+SEA ADJUSTABLE MARTINGALE COLLAR:

Measure A and B, as seen in the photo- For this style collar, the collar will need to be large enough to slip over the head in order to put the collar on so measurement A is necessary to ensure the collar will be large enough to do so. If the head measurement is larger than the neck measurement, the collar will need to be sized according to the head measurement. Fluffy dogs may need more than an inch extra if their neck measurement is larger than their head measurement. This style collar is adjustable using the adjustable slides on the side to cinch down the collar webbing to fit the size of the neck. Please refer to Slip Collars & Non-Adjustable Martingales above for sizing guide on non-adjustable martingale collars.

SUMMIT+SEA SIDE-RELEASE BUCKLE COLLAR:

Measure part B, as seen in the photo- As a general rule, the collar should be sized at least 1" larger than the neck measurement to ensure a good fit. For example, a dog with a 15" neck would best fit in a size 14-17" collar. Fluffy dogs may need more than an inch for comfort so please keep your dogs specific needs in mind when selecting a collar size. This style collar is completely adjustable using the adjustable slides on the side to cinch down the collar webbing to fit the size of the neck. Due to it's adjust-ability this collar is a great option for growing dogs since it can be cinched down smaller and length can be let out as the pup grows.