All Teched Up
We’ve gone the extra mile with this one, pairing two advanced technologies… just for you.
It’s a balancing act, really. On one hand, you get an inch-perfect fit with the custom stretch-fit tech. Made lightweight and extra flexible with spandex layered into the sweatband and the crown.
On the other hand, Pro-Formance tech wicks away moisture like a sponge – keeping your head cool & dry every moment you’ve got The Jim on.
Plus the Effing Bird logo is even more prominent than usual in white-on-black.
The Jim’s gonna be your trusty partner at the gym – pun definitely intended! But it’s great for all manners of outdoor use & isn’t too shabby for some indoor action either.
Ready to order?
“It looks effing good and fits effing well to. already have more merchandise on the way and will be buying more products in the future.” – ⭐⭐⭐⭐⭐Erik, Verified Buyer
The Jim Fitted
Size Chart
Find Your Effing Fit
The Jim Fitted
| Hat Size | US Hat Size | Head Size in Inches | Metric Size |
|---|---|---|---|
| One Size | 6 7/8 | 21½″ | 55 |
| 7 | 21⅞″ | 56 | |
| 7 1/8 | 22¼″ | 57 | |
| 7 1/4 | 22⅝″ | 58 | |
| 7 3/8 | 23″ | 59 |
All available size ranges for this hat. The currently selected range is highlighted when structured sizing is available.
- Start a flexible measuring tape at the center of your forehead.
- Wrap it level around your head where the hat’s sweatband will sit, about ½ to 1 inch above your eyebrows and ears.
- Check that the tape stays flat and is not twisted.
- Keep it comfortably snug without pulling it tight.
- Note the measurement in inches or centimeters and use the chart below to find your fitted size.
- If your measurement falls between fitted sizes, choose the next size up.
- No flexible tape? Use a non-stretch string, mark the overlap, then measure the string with a ruler.
Convert your measurement to a US hat size using the chart below.
| Hat Size | US Hat Size | Head Size in Inches | Metric Size |
|---|---|---|---|
| Small | 6⅝ | 20⅞ | 53 |
| Small | 6¾ | 21⅛ | 54 |
| Small | 6⅞ | 21½ | 55 |
| Medium | 7 | 21⅞ | 56 |
| Medium | 7⅛ | 22¼ | 57 |
| Large | 7¼ | 22⅝ | 58 |
| Large | 7⅜ | 23 | 59 |
| Extra Large | 7½ | 23½ | 60 |
| Extra Large | 7⅝ | 23⅞ | 61 |
| Extra Large | 7¾ | 24¼ | 62 |
| Extra Extra Large | 7⅞ | 24⅝ | 63 |
| Extra Extra Large | 8 | 25 | 64 |
| — | 8⅛ | 25⅜ | 65 |
| — | 8¼ | 25¾ | 66 |
| — | 8⅜ | 26⅛ | 67 |
| — | 8½ | 26½ | 68 |
| — | 8⅝ | 26⅞ | 69 |
| — | 8¾ | 27¼ | 70 |
| — | 8⅞ | 27⅝ | 71 |
| — | 9 | 28 | 72 |
- Unit price
- /per
Size Chart
Find Your Effing Fit
The Jim Fitted
| Hat Size | US Hat Size | Head Size in Inches | Metric Size |
|---|---|---|---|
| One Size | 6 7/8 | 21½″ | 55 |
| 7 | 21⅞″ | 56 | |
| 7 1/8 | 22¼″ | 57 | |
| 7 1/4 | 22⅝″ | 58 | |
| 7 3/8 | 23″ | 59 |
All available size ranges for this hat. The currently selected range is highlighted when structured sizing is available.
- Start a flexible measuring tape at the center of your forehead.
- Wrap it level around your head where the hat’s sweatband will sit, about ½ to 1 inch above your eyebrows and ears.
- Check that the tape stays flat and is not twisted.
- Keep it comfortably snug without pulling it tight.
- Note the measurement in inches or centimeters and use the chart below to find your fitted size.
- If your measurement falls between fitted sizes, choose the next size up.
- No flexible tape? Use a non-stretch string, mark the overlap, then measure the string with a ruler.
Convert your measurement to a US hat size using the chart below.
| Hat Size | US Hat Size | Head Size in Inches | Metric Size |
|---|---|---|---|
| Small | 6⅝ | 20⅞ | 53 |
| Small | 6¾ | 21⅛ | 54 |
| Small | 6⅞ | 21½ | 55 |
| Medium | 7 | 21⅞ | 56 |
| Medium | 7⅛ | 22¼ | 57 |
| Large | 7¼ | 22⅝ | 58 |
| Large | 7⅜ | 23 | 59 |
| Extra Large | 7½ | 23½ | 60 |
| Extra Large | 7⅝ | 23⅞ | 61 |
| Extra Large | 7¾ | 24¼ | 62 |
| Extra Extra Large | 7⅞ | 24⅝ | 63 |
| Extra Extra Large | 8 | 25 | 64 |
| — | 8⅛ | 25⅜ | 65 |
| — | 8¼ | 25¾ | 66 |
| — | 8⅜ | 26⅛ | 67 |
| — | 8½ | 26½ | 68 |
| — | 8⅝ | 26⅞ | 69 |
| — | 8¾ | 27¼ | 70 |
| — | 8⅞ | 27⅝ | 71 |
| — | 9 | 28 | 72 |
Free Shipping
We offer free ground shipping on all orders $60+.
Free & Easy Returns
Free returns and exchanges within 30 days.
Love It or Leave It
Not thrilled? Return it hassle-free.
Visor Style & Closure
Crown Height
Size
| Hat Size | US Hat Size | Head Size in Inches | Metric Size |
|---|---|---|---|
| One Size | 6 7/8 | 21½″ | 55 |
| 7 | 21⅞″ | 56 | |
| 7 1/8 | 22¼″ | 57 | |
| 7 1/4 | 22⅝″ | 58 | |
| 7 3/8 | 23″ | 59 |
Adding product to your cart
All Teched Up
We’ve gone the extra mile with this one, pairing two advanced technologies… just for you.
It’s a balancing act, really. On one hand, you get an inch-perfect fit with the custom stretch-fit tech. Made lightweight and extra flexible with spandex layered into the sweatband and the crown.
On the other hand, Pro-Formance tech wicks away moisture like a sponge – keeping your head cool & dry every moment you’ve got The Jim on.
Plus the Effing Bird logo is even more prominent than usual in white-on-black.
The Jim’s gonna be your trusty partner at the gym – pun definitely intended! But it’s great for all manners of outdoor use & isn’t too shabby for some indoor action either.
Ready to order?
“It looks effing good and fits effing well to. already have more merchandise on the way and will be buying more products in the future.” – ⭐⭐⭐⭐⭐Erik, Verified Buyer
What some of our 25,000+ happy customers are saying
- DDDanielle D.Verified BuyerI recommend this productRated 5 out of 5 stars6 days agoThe Bomb Didity
Everywhere I go I get compliments and hudge 😊
Was this helpful? - BbradRated 3 out of 5 stars1 month ago3 Stars
The solid flex back fits perfect. But the flex trucker hat does not. The front of the hat on the left and right Temple area bows out way too much. So, even with me curving the bill and what not I can't really wear it forward, it's going to end up having to be a backwards hat
Was this helpful? - PFPatrick F.Verified BuyerI recommend this productRated 5 out of 5 stars1 month agoLove the hat
These hats are well made and designed. Love the little touches.
My only issue was i should have ordered a bigger one as this one is snug.
Definitely getting another.
Was this helpful? - JBJacob B.Verified BuyerI recommend this productRated 5 out of 5 stars1 month agoLove it!!!
Hat looks awesome. The logo on the bottom of the bill is clutch. The way the hat is lightweight and the stretch fit is comfortable its a total buy for sure..
Was this helpful? - TLTerence L.Verified BuyerI recommend this productRated 5 out of 5 stars1 month agoBuy it
Good quality, nice fit.
Was this helpful?