Manna Pro Opti-Force Fly Mask

Regularly: $29.99

promotional discount applied.  Cart total will reflect savings.


Sometimes, manufacturers require that products be advertised only at their suggested prices. When we choose to sell these items for less, we display the sale price only in the cart. To see the price, click Add to Cart.



Buy 2 or more, each at $20.69
Buy 3 or more, each at $20.24
Buy 6 or more, each at $19.79

In Stock. Usually Ships within 24 hours.



Buy 2 or more, each at $20.76
Buy 3 or more, each at $20.31
Buy 6 or more, each at $19.86

In Stock. Usually Ships within 24 hours.

Quantity discount will reflect in cart.

Shipping weight = 0.44 lb.

Product Summary:

MannaPro® Opti-Force™ Fly Mask Insect Shield Repellent Gear

The innovative Opti-Force™ Fly Mask provides built-in, invisible, odorless insect protection with Clear View Vision™ mesh, to shield your horse from harmful UV rays. The tear-resistant material is highly durable and lightweight. Insect Shield Repellent has been proven and registered to repel mosquitoes, ticks, ants, flies, chiggers, and midges (no-see-ums).

The EPA requires extensive effectiveness data to prove a products ability to repel insects. Insect Shield technology is EPA-registered to last through 70 launderings.


  • Built-in, invisible, odorless insect protection
  • Repels mosquitoes, ticks, flies, and fleas (including insects that cause Lyme disease and West Nile)
  • Comfortable design keeps the mask off the face and away from the eyes of the horse
  • Designed for a secure fit with strong, clear view vision mesh
  • Protects exposed areas around the mask, including muzzle and ears
  • Equi-Glo Nite Reflector material
  • Two adjustable safety fasteners
Item Specifications:

Horse: Fits horses from 900-1200 lb.
XL: Fits Warmbloods


Active Ingredients:
This item has been treated with permethrin insect repellent. Repels mosquitoes, ticks, fleas, and flies. Dry cleaning removes active ingredient. Do not dry clean. Do not re-treat gear with other permethrin insect-repellent products. Repellency to mosquitoes remains effective for 6 months of exposure to weathering for non-washable items: tents, tarps, awnings, patio umbrella covers, kennel covers, stall covers. Repellency remains effective for 25 washings for washable items: sleeping bag covers, backpacks, outdoor furniture covers, outdoor furniture cushion covers, netting, blankets, ground cloths, horse blankets, pet bedding.
EPA Reg. No 74843-5 EPA Est. No 74843-CHN-001

Active Ingredients:
Permethrin: 0.52%
Other Ingredients: (Gear): 99.48%
Total: 100.00%

Fitting and Care Tips:
1. When putting the mask on your horse, approach the horse from the left side. Directly approaching your horse with the mask could startle him.
2. Open the two locking fasteners and place the ears through the mask with the forelock over the trim and mesh. Secure both the locking fasteners under the jaw.
3. Once the mask has been fastened with the right amount of snugness, check each side of the horses face by allowing your fingers to slip comfortably between the mask and your horse. The mask fabric should not be too close to your horse’s eyes; ensure the eye lashes do not poke through the material.
4. Straps can be adjusted for a custom fit. Checking the mask daily is recommended. Examine the condition of your horses face and eyes. Check for any damage to the mask. Replace the mask if damage is found, as it is difficult to repair. It’s important to keep the mask clean. Wash the mask periodically, with mild soap and water. Caution: vision may be impaired during rainstorms.

Style Item Number Model Number UPC
Horse E014792 HRS 1000189 095668944803
XL E014792 XLG 1000190 095668944933

Product Reviews by Customers

4.9 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Fly Mask
Great fit, durable, both my horses wear them well.
August 5, 2018
2 months ago
Tired of fly's, use Opti Force fly mask recommend by my mule Rojo Grande!
Second year I have used Opti force. The XL fits my large riding mule wonderfully. With his mask and regular fly sprays he is virtually fly free. So my two mustangs will not keep fly mask on and even though they get fly spray regularly they are still bothered by the flys. I wish you made this in pony size, my 44 inch pony mule would enjoy its features also.
August 1, 2018
2 months ago
Perfect fit
I really like this fly mask for my gelding. He hates the standard ones and will get them off one way or another. The fly's stay off his face with this one and he's a lot happier. The fit is good too. Highly recommended
July 3, 2018
3 months ago
The manna pro opti fly mask is great!
these are the best fly masks I have tried - and I have tried them all - the flies don't land on the mask at all. and they stay on better than any other brand - that is saying something since I would have to go and find the fly masks in the pasture a few times a week - not with these, they seem to stay on better.
June 29, 2018
3 months ago
best fly mask
February 25, 2018
1 year ago
Highly recommend
I highly recommend this fly mask. My mare has a black face, so it blends with her coloring really nicely. The reflector is highly visible at night. Best of all, this mask totally keeps flies away from my mare's ears!
February 11, 2018
7 months ago
Opti-Force Fly Mask
Nice, clear mask, good vision. Fits well due, broader around the eyes. Horses don't rub them off since no interference with eyes.
Flies still land on mask even with Insect Shied.
November 30, 2017
10 months ago
Perfect for my thoroughbred!
This mask fits the best for my Thoroughbred's big head! And it stays on all day long regardless if he's wrestling around with his buddies. I like that it is black mesh as well because I believe he can see better through it.
November 15, 2017
1 year ago
good coverage
Works well for my gelding who has cataracts and doesn't see well. Material is see-thru but strong. Also it comes down low on his nose. It fits well and keeps the flies off
September 28, 2017
over 3 years ago
For horses that rub other masks off
I have a horse that rubs his mask off on a daily basis. I bought this mask because it has a full spectrum viewing area and is more light weight than other designs. He also has a thick forelock and other designs seem to impeded his comfort. I can proudly say he has been wearing this mask non-stop for two weeks and has been fly free. A real relief for me. This mask also goes down the nose a little farther than other masks and helps with those pesky face flies around the nose.

Comfort: 5

Durability: 5
June 22, 2017
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 28 answers
Why did you choose this? Store
It was requested by Rosemary Farm Sanctuary as something they could use.
Sondra G on Sep 10, 2018
they work
Leslie S on Jul 8, 2018
It was requested by Rosemary Farm Sanctuary as something they could use.
Sondra G on Sep 10, 2018
Really like the lower nose coverage and horses seem to keep them on better.
SYLVIA H on Jul 20, 2018
they work
Leslie S on Jul 8, 2018
See through and light weight with built in bug repellent for trail riding
Elizabeth S on Jul 2, 2018
Used before
Kendra T on Jun 27, 2018
My horse only has one eye and I love the fact that you can see so well through the material when compared to all other fly masks.
Amy J on Jun 14, 2018
love these fly masks they are the lightest and best ones I found - I spray them with tghe pro opti force fly spray before I put the on...
pat s on Jun 14, 2018
It's see through and lighter weight than others.
Pamela C on May 11, 2018
Like them good product
CLEVELAND M on Apr 6, 2018
some flies still get to one of my horse's eyes with another fly mask. Will try this since it has fly spray already on mask. hoping it keeps flies away from the mask and areas they slip under. good price
denise c on Oct 28, 2017
fly season but had issues w/ eye rubbing on one of our horses
Sandra H on Jun 5, 2017
like the idea of fly control, reflective, and easier to see thru mesh all in one mask... plus price is reasonable so bought one for each of my horses.... so we shall see if they like them
Jeanne B on May 7, 2017
Warmblood size fits my average size horses. I can see their eyes, which makes this a perfect choice for me. I like to see if the need attention at a glance.
HEIDI F on Dec 26, 2016
Best fly mask I have found
Aubrey H on Dec 11, 2016
I saw one of these masks on a horse recently. I was very impressed and decided to purchase these masks for my horses.
Steve H on Jul 21, 2016
My horse has one eye & the fine mesh makes it easier for her to see
dena R on May 20, 2016
Best fly mask ever! I have three so far and have ordered these two
Marilyn K on Jun 17, 2015
Really like the lower nose coverage and horses seem to keep them on better.
SYLVIA H on Jul 20, 2018
See through and light weight with built in bug repellent for trail riding
Elizabeth S on Jul 2, 2018
What is the UV protection percentage?
A shopper on Jul 31, 2017
BEST ANSWER: Does not say on the box
Would horse size adjust to arabian size?
Alicia W on May 2, 2018
BEST ANSWER: I would think so. I have a young thoroughbred and she has a small head. I really liked this product as I felt the visibility was better especially once it was dirty in comparison to the more traditional thick plastic fly mask
do you have a fly mask with UV protection?
A shopper on Nov 13, 2017
BEST ANSWER: We did get a couple or so of these masks, and not likely to get any more. I can't really tell you about the insect repellent feature's effectiveness, because so much of my attention went to the fact the horses did not like them and tried to rub them off which did a lot of damage to the masks. The masks cover too much area and made the horses' heads hot and sweaty, which may be why they tried to rub them off. Anyway, we had to take them off. Really disappointed with the masks.
Does this mask come with ear covers?
A shopper on May 2, 2016
BEST ANSWER: No, it does not come with ear covers.
is there any fleece lining to protect the face from rubbing?
A shopper on Jun 17, 2015
BEST ANSWER: This mask is bound around the edges with fabric.