Dog collars sizing, fit & ordering guide + more!

Have a bounty of curiosity about picking the perfect Atomic Collar? Not sure what size to order? What’s the difference between styles? Does the webbing width really make a difference? You’re in the right place!

This guide covers webbing widths, measuring your dog for a collar, collar styles, webbing colors and turnaround & shipping info! Everything to help you when you order your unique dog collar from Atomic Collars.

How to measure your dog for a collar

Getting the right fit is key for both comfort and safety.

👉  Use a soft measuring tape and measure where the collar will naturally sit on your dog’s neck.
👉 Or wrap a string around your dog’s neck & measure how long it is.
👉 Or measure your dog’s current collar – side release buckles from just beneath the teeth / male end to the end of the buckle / female end. For belt style collars measure from the middle of the buckle to the hole your dog currently is on. 

Make sure you can fit two fingers between the collar and your dog’s neck for the perfect fit! 

Atomic Collars collar sizing

Classic Collar Sizing - upcycled material + polypro webbing

  • XXS / 12 – 
  • XS / 14 – 
  • Small / 16 – 
  • Medium / 18 – 
  • Large / 20 – 
  • XL / 22 –
  • 2X /  24 – 
  • custom size larger than 24 inches

Layered Fabric + Biothane Collar Sizing

  • Medium / 18 – 15 inch
  • Large / 20 – 17 inch
  • XL / 22 – 19 inch
  • 2X /  24 – 21 inch
  •  custom size larger than 24 inches

Atomic Collars dog collar styles

Flat Buckle Collars

Flat buckle collars feature strong black plastic side release buckles, a welded D ring & metal triglide. These are classic collars, perfect for everyday and every dog. 

To fit them, measure your dog as noted above. 

Martingale Collars

Also known as greyhound or sighthound collars. These collars feature a loop with a D ring. Your leash attaches to the D ring and when pressure is applied to the the collar the loop brings the sides of the collar together to cinch. Perfect for dogs who are prone to slipping collars or need a gentle correction. 

Don’t worry, a well fitted martingale won’t choke your dog!

You’ll need TWO measurements to fit a martingale:

  • Around your dog’s neck
  • Around the widest part of your dog’s head

Limited Slip Collar

Flat buckle collars feature strong black plastic side release buckles, a welded D ring & metal triglide. These are classic collars, perfect for everyday and every dog. 

To fit them, measure your dog as noted above. 

House Collar / Tag Collar

Also known as greyhound or sighthound collars. These collars feature a loop with a D ring. Your leash attaches to the D ring and when pressure is applied to the the collar the loop brings the sides of the collar together to cinch. Perfect for dogs who are prone to slipping collars or need a gentle correction. 

Don’t worry, a well fitted martingale won’t choke your dog!

You’ll need TWO measurements to fit a martingale:

  • Around your dog’s neck
  • Around the widest part of your dog’s head

Layered Fabric + Biothane Collar

Flat buckle collars feature strong black plastic side release buckles, a welded D ring & metal triglide. These are classic collars, perfect for everyday and every dog. 

To fit them, measure your dog as noted above. 

Graphic of the various webbing widths available

Dog collar webbing widths

Atomic Collars are available in multiple widths:

  • 3/4 inch
  • 1 inch
  • 1.5 inch
  • 2 inch
  • 3 inch with 2 or 1.5 inch hardware

Wider collars are quite a statement! They are bold, show the pattern of the material broadly and are great for large to ginormous dogs. Small & teenie dogs can rock 3/4 inch and 1 inch collars well (or even a 1.5 inch if they are feeling quite bold!)

Webbing Colors

Polypro Webbing Colors for Classic Collars

Black, brown, navy blue, white, golden yellow, orange, red, burgundy, pink, purple, blue, teal, kelly green & dark green!

Biothane Webbing Colors for Layered Fabric + Biothane Collars

Available in  2 inch: Black, dark brown, red, purple, royal blue, teal, bright green & bright orange. 

What Happens Over Time? (Wear & Tear)

Let’s be real—your dog’s collar is going to live a life.

Over time:

  • Dirt may not fully wash out
  • Snags can turn into fraying
  • Daily wear adds up

And that’s okay.


Don’t Toss It—Recycle It ♻️

When your collar starts to wear out, don’t throw it away!

Send it back and we’ll reuse the hardware in a brand new BOMB Atomic Collar for your pup.

👉 If the hardware is beyond saving, it may be time for a full replacement—but we’ll let you know.

Every Atomic Collar gets a second life. Mega spiffy.

Shipping & Turnaround Time

We keep things simple:

  • Flat rate shipping: $5 anywhere in the United States
  • Ready to Wear Collars: Ship within 1 week
  • Custom Made Collars: Please allow up to 2 weeks for creation

👉 During the holiday season, turnaround time may extend to 3–4 weeks—plan ahead!

Add a FAQ section:

  • What if my dog is between sizes?
  • Are wide collars better?
  • Can puppies wear these?