Tilley T4MO Hikers Hat

Item No. 6841-T4MO-1-KHOL

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Product Description

Designed for the avid hiker, our innovative Hat comes with lots of features for the trail.

Our sun-protective Hiker's Hat is designed with an evaporative cooling insert, powered by HyperKewl™, to help relieve heat stress during treks. A rear brim loop provides a place to securely clip your Hat in place when not in use. These unique features, plus all the usual Tilley® Hat benefits make this the ultimate Hat for the trail.

Maximum sun protection - fabric is certified UPF 50+, the highest given
An abundance of shade - broad brim protects from both sun & rain
Keeping cool - the HyperKewl™ Evaporative cooling material absorbs & slowly releases water through evaporation to help 'super charge' the body's natural cooling process
Guaranteed for life
3/4" mesh insert around the top provides extra ventilation
Front & back wind cords system secures Hat in gusty conditions
Water-repellent finish keeps off the rain
Pocket in crown holds the insert and is made with mesh to help increase airflow for maximum evaporation
Buoyancy - stays afloat in water
A rear brim loop provides a place to securely clip your Hat in place when not in use
Made in Canada
Brim size: Front & back: 3 1/2"; Sides: 2 1/2"
Under brim color: Khaki under brim is Olive. All other colors have the same under brim color as body of hat
Weight: 3.8oz / 108 grams
Fabric: Hat: 98% organic cotton; 2% spandex - lightweight, breathable, sueded for a soft touch & with some give for a comfort fit HyperKewl™ Evaporative Insert: 100% polyester mesh on the outside; interior is 53% polymer fibres; 47% cellulose fibres
Care: Remove HyperKewl™ insert before washing hat. Machine wash hat in cool water, delicate cycle or hand wash; Reshape & air-dry.
How to use your HyperKewl™ Evaporative Insert: Soak the insert in cold water for up to 5 minutes - insert into the Hat. The airflow through the mesh panel will start the evaporative cooling process. The cooling insert is expected to provide temperatures that are approx. 10 to 15 degrees Fahrenheit cooler than ambient temperature depending on airflow. It will not feel like an air-conditionner on your head - it will super charge the natural evaporation process to help you feel comfortable on the trail. High humidity will diminish the fabric's ability to evaporate water.

Customer Reviews

4.2 / 5.0
45 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Looking forward to another great wearing experienc
...just got me a T4MO-1 Airflow in Olive, had to get a 7 3/8; hat runs a little smaller than my 7 1/4 LTM6 Airflow #tilleylife, Jordan @ #carolinahatcompany was spot on when it came to “...talking Tilley”
February 13, 2021
Originally posted at
Rated 3 out of 5
Not a T4 replacement
I can see why it was thought the T4MO-1 would be a worthy replacement for the original T4, but in my opinion it isn't. The cotton used in the T4MO-1 is thinner than in the T4 so the crown doesn't hold its shape. Though I can't compare (I no longer have my T4 owing to the fact that I had to send it in to get it replaced, I think the height of the crown is greater, which for me makes the hat sit down uncomfortably over my ears. Even the strap is thinner, so that it doesn't stay snug in place in the side eyelets.

It feels as though quality was sacrificed on this hat.

All of these are correctable issues; alternatively, could you just bring the trusted T4 back?
May 18, 2020
Originally posted at
Rated 2 out of 5
I have six Tilley hats and over the years love wearing each of them. However I find the hikers hat disappointing. It isn’t as substantial as the others and the stiffness of the mesh panel at the top prevents the hat forming a correct shape, especially if the hat has been folded. There is no panel in the crown to write your name etc.
November 6, 2019
Originally posted at
Rated 1 out of 5
Tilly Hikers Hat T4M0-1
I have purchased over the last 20 years 4 of the Tilly T4 hat. In April 2019 I purchased another what I thought was the same old T4 I loved. The new hat, a T4M0-1 is the worst hat I have ever owned. I regularly wash my hats as recommended. In the photos you can see the hat on the right, my old T4, after years of washing still comes out of the wash holding its shape. The new T4 on the left flops and will not hold its shape.
The hat is an embarrassment to wear. You can see in these pictures the brim has lost its shape and looks nothing like the photos Tilly used in advertising.
I used to walk and see other Tilly hat owners, and share a knowing grin. Now I hide my head in shame when I see a Tilly owner. It is past the 90 day return so I am stuck with this hat, which I will leave on my fishing boat. I do not think fish care about how bad a hat looks.
In closing, I believe that Tilly has followed the path of too many successful companies and exchanged quality for profit.
September 28, 2019
Originally posted at
Rated 5 out of 5
Just about to retire mine after several years!
She served me well over many miles in the desert southwest. A few washes and LOTS of sweat stains, she deserves to retire to my adventure wall. Orange fades to look like it earned the badges. Love this old hat, love all my Tilley hats!
September 20, 2019
Originally posted at
Rated 5 out of 5
Feather Light
When you wear this hat, it is actually a lot more wrinkled than the pictures imply, but that's a small price to pay. This is an incredibly comfortable, very lightweight hat for, in my case, Texas summers. With this new addition, plus my old tried and true hemp, I'm Tilley hat-set for about 10 months out of the year in Austin.
August 23, 2019
Originally posted at
Rated 1 out of 5
Very POOR hat
I have own 2 T-4 hats and they were the best hats that I could have asked for. This thing is poorly made, floppy brim, not made of canvas. I am done with this company and at one time I recommended them to everyone.
August 9, 2019
Originally posted at
Rated 4 out of 5
Floppy Brim
I've had two Tilley Hats previously- a venerable T3, and then a T3 Wanderer to replace the original.

I was looking for a hat with a wider brim to give more neck protection and more shade on the face. Unfortunately in the UK Tilley have stopped with the T4 Cotton Duck and the TH4 (Hemp) leaving broad brim choices a little limited. I thought i'd give the T4MO-1 a try, my first Tilley with the mesh.

Overall it's a very nice hat well put together, the brim shape is good and provides huge amounts of sun protection and the sloping shape is lovely. I was hoping to use it for kayaking/hiking but after trying it out in windy conditions the brim is just too floppy for kayaking (maybe the paddlers hat might be better but that's a medium brim too). The T3 and the T3 Wanderer you can just drop in the water and the brim instantly stiffens. Not so with this model. I have some concerns as to getting sunburnt through the mesh too. So this hat will now be relegated to more recreational rather than outdoor-adventure use. The hyperkewl is a nice feature and it was noticeably cooler than both T3s though you do lose the pocket in the crown. It's a lot floppier (and lighter) than the photos make out. Go for it for sun protection but be wary if you intend to use it in wind.
June 15, 2019
Originally posted at
Rated 3 out of 5
Colours shown are not true.
Tough luck with my Tilleys, but I still love them. Looking to buy a fifth hat.

However, I just came back from a store that sells the Tilley T4MO-1 Hiker's Hat, and the Khaki colour does not look like the Khaki shown on your website. I did not buy it at the store, as I wanted to check out the reviews first. I am hesitant now as I see some reviews revealing that some color fades, and the cotton fabric shrinks.

Same thing with my last hat, the T5MO ORGANIC AIRFLO® in blue. It was a disappointment when the blue did not look like the blue shown in your pictures. The quality
was lower than the original Tilleys with cheaper chin straps, and thinner materials. Because I ordered online, a refund included extra shipping fees, so I gave my hat away.

My third hat is a discontinued winter hat that had fold down ear flaps. The sizing were S, M, L. Medium was too large, and I was afraid to wear it on a windy day because it had no chin straps. Small would of been too small. I gave that hat away.

The second Tilly I had was the original Mash Up. That was a nice hat until it shrunk on me. Sure I tugged and stretched it, but it still fits tight.

My first Tilly, the LT5B LIGHTWEIGHT NYLON HAT is still a favorite, but it is so stained now, no matter how much I wash it.
June 10, 2019
Originally posted at
Rated 3 out of 5
It’s OK.
I’ve had the hikers hat for over a year now and have worn it a lot. First of all, it’s a well made hat and the fabric is very soft. If I were to order this same hat again, I would order a size larger than I normally wear because I found this hat did shrink a size. I suppose this has something to do with the cotton fabric. Also, I bought the light gray color, and it has faded severely over the past year and has taken on an almost light purple color, unfortunately. Again, I like the hat, but it has not stood the test of time as my other Tilley hat has.
June 9, 2019
Originally posted at