SIZE GUIDE
Choosing the right Herm Sprenger collar starts with an accurate measurement. For prong collars, measure your dog's neck high, just behind the ears and beneath the jawline. A properly fitted collar should stay securely in position without sliding down or restricting comfortable movement.
ADJUSTING THE FIT
For most Herm Sprenger prong collars, add approximately 2 inches (5 cm) to your dog's neck measurement as a starting point. For example, a 16-inch neck measurement suggests starting around an 18-inch collar. Because available lengths vary by model, adjust the final fit by adding or removing compatible links. The collar should fit snugly without excessive pressure or slipping over the dog's head.
Size & Wire Gauge Guide
Examples from the size chart. Lengths and fit vary by model.
2.25 mm
- Collar length
- 16 in
- Max. neck size
- 13 in
- Dog weight
- Up to 40 lb (18 kg)
3.00 mm
- Collar length
- 22 in
- Max. neck size
- 18 in
- Dog weight
- Up to 77 lb (35 kg)
3.20 mm
- Collar length
- 23 in
- Max. neck size
- 19 in
- Dog weight
- Up to 88 lb (40 kg)
4.00 mm
- Collar length
- 25 in
- Max. neck size
- 21 in
- Dog weight
- Up to 154 lb (70 kg)
WIRE GAUGE & FINAL FIT
Wire gauge describes the thickness of a collar's metal links; collar length determines its overall size. Use the weight guide as a starting reference, then confirm both measurements against the exact Herm Sprenger model and variant you're buying. Size charts and recommendations can differ between collar designs.
To fit or remove a prong collar, open a link or use its designated fastener rather than pulling it over the dog's head. Check the fit before each training session, remove the collar afterward, and never leave it on an unsupervised dog.
Chain Collars and Neck Tech Collars have different fitting requirements. Always follow the instructions and dimensions listed for your selected model.