Lemieux Size Guide - ArmourShield Pro Fly Masks

The LeMieux ArmourShield Pro Fly Mask is one of the most advanced equine fly masks available, combining a fine-mesh UV-protective shell with a soft, padded surround for all-day comfort. Available in both Standard and Full (with nose) styles, the ArmourShield Pro is designed to protect your horse or pony from flies, UV rays, and airborne irritants throughout the spring and summer season.

Use this size guide to find the correct fit for your horse before browsing our full range of LeMieux ArmourShield Pro Fly Masks. Getting the right size is essential — a mask that is too loose may slip or rub, while one that is too tight can cause discomfort around the eyes and ears.

How to Measure Your Horse

The size charts below reference three key measurements. Take these with a soft tape measure:

  • A — Forehead width: Measure across the widest point of the forehead, between the eyes.
  • B — Face length: Measure from the poll (top of the head) down to the bottom of the nose.
  • C — Muzzle circumference: Measure around the muzzle at its widest point (relevant for Full masks).

If your horse falls between sizes, we recommend sizing up for comfort. All measurements are approximate.

Standard Fly Mask

Size Bridle Size A B C
X-Small Mini / Small Pony 28cm 47cm 44cm
Small Pony 33cm 51cm 45cm
Medium Cob 34cm 56cm 46cm
Large Large Cob / Full 36cm 61cm 47cm
X-Large Extra Full 39cm 65cm 49cm

All measurements are approximate.

LeMieux ArmourShield Pro Standard Fly Mask size guide diagram

Full Fly Mask (with Nose)

Size Bridle Size A B C
X-Small Mini / Small Pony 28cm 47cm 44cm
Small Pony 33cm 51cm 45cm
Medium Cob 34cm 56cm 46cm
Large Large Cob / Full 36cm 61cm 47cm
X-Large X-Full 46cm 65cm 49cm

All measurements are approximate.

LeMieux ArmourShield Pro Full Fly Mask size guide diagram

Frequently Asked Questions

What is the difference between the Standard and Full ArmourShield Pro Fly Mask?

The Standard mask covers the eyes and ears only, whilst the Full mask extends down over the nose for additional protection against flies and UV exposure on the muzzle. Both styles use the same fine-mesh UV shell and padded surround.

Is the ArmourShield Pro suitable for horses with sensitive skin?

Yes. The soft padded surround is designed to minimise rubbing, making it a popular choice for horses prone to skin sensitivity or sweet itch around the face.

Can I use this size guide for other LeMieux fly masks?

This guide is specific to the ArmourShield Pro range. Sizing may vary across other LeMieux styles. Always check the individual product listing for size information.

Shop the Range

Ready to find the right mask for your horse? Browse our curated collections below: