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Knit Docker Hat by Hammaburg - JJ Hat Center ®

Hammaburg

Knit Docker Hat

$69.00

How Do I Find the Right Hat Size?

At JJ Hat Center, finding your perfect hat size is easy. Measuring your head circumference is the first step:

Use a soft measuring tape to measure around the widest part of your head—just above your ears and eyebrows—to the nearest 1/8 inch.
If it’s been a while since your last hat purchase, we recommend measuring again. Head size can change over time due to hairstyle, weight, or age.
Keep in mind that sizing can vary slightly between manufacturers.
If you fall between sizes, we offer cork sizing inserts to help fine-tune the fit.

	XS	S	M	L	XL	XXL
Size	6 3/4	6 7/8 - 7	7 1/8 - 7 1/4	7 3/8 - 7 1/2	7 5/8 - 7 3/4	7 7/8 - 8
Inches	21	21.4 - 21.8	22.2 - 22.6	23 - 23.4	23.8 - 24.2	24.6 - 25
Metric (cm)	54	55 - 56	57 - 58	59 - 60	61 - 62	63 - 64

How Do I Measure My Glove Size?

To find your glove size, use a flexible measuring tape to measure around your dominant hand at its widest point—excluding the thumb. Refer to the chart below for glove size conversions.

cm	15.5	16	16.5	17	18	19	20.5	22	23	24	26	27
Size (inches)	4.5	5	5.5	6	6.5	7	7.5	8	8.5	9	9.5	10
Women’s sizes	XS	XS	S	S	M	M	L	L	XL	XL	-	-
Men’s sizes	-	-	-	-	S	S	M	M	L	L	XL	XL

Contact Us

If you are unable to find the answers you need, please contact us: [email protected]

How Do I Find the Right Hat Size?

At JJ Hat Center, finding your perfect hat size is easy. Measuring your head circumference is the first step:

Use a soft measuring tape to measure around the widest part of your head—just above your ears and eyebrows—to the nearest 1/8 inch.
If it’s been a while since your last hat purchase, we recommend measuring again. Head size can change over time due to hairstyle, weight, or age.
Keep in mind that sizing can vary slightly between manufacturers.
If you fall between sizes, we offer cork sizing inserts to help fine-tune the fit.

	XS	S	M	L	XL	XXL
Size	6 3/4	6 7/8 - 7	7 1/8 - 7 1/4	7 3/8 - 7 1/2	7 5/8 - 7 3/4	7 7/8 - 8
Inches	21	21.4 - 21.8	22.2 - 22.6	23 - 23.4	23.8 - 24.2	24.6 - 25
Metric (cm)	54	55 - 56	57 - 58	59 - 60	61 - 62	63 - 64

How Do I Measure My Glove Size?

To find your glove size, use a flexible measuring tape to measure around your dominant hand at its widest point—excluding the thumb. Refer to the chart below for glove size conversions.

cm	15.5	16	16.5	17	18	19	20.5	22	23	24	26	27
Size (inches)	4.5	5	5.5	6	6.5	7	7.5	8	8.5	9	9.5	10
Women’s sizes	XS	XS	S	S	M	M	L	L	XL	XL	-	-
Men’s sizes	-	-	-	-	S	S	M	M	L	L	XL	XL

Contact Us

If you are unable to find the answers you need, please contact us: [email protected]

Payments

Is my payment data safe with you?

Yes. We accept online payments, and all processing of sensitive customer information is fast, easy, and secure. Your payment details are handled by trusted providers using industry-standard encryption.

What forms of payment do you accept?

We accept credit cards (Visa, MasterCard, American Express, Discover), PayPal, Apple Pay, and Google Pay.

Can I cancel or change my order?

We begin processing orders quickly, so we can’t make changes once an order is confirmed—this includes the delivery address and shipping method. You may be able to update details directly with the carrier, or you can cancel within our short post-confirmation cancellation window and place a new order instead. For assistance, please see our Shipping page or contact us.

Are all online products available in your New York store?

Our New York store carries as many styles as possible, but space is limited and not every online item is available in-store. If you’re looking for something specific, feel free to contact us before your visit.

Shipping & Delivery

How long does it take to get my products?

We strive to fulfill and ship orders as quickly as possible. Most orders ship within 1–2 business days. Transit time depends on your location and the shipping method selected at checkout. For details, please visit our Shipping page.

How can I track my order?

Once your order ships, you’ll receive an email with a tracking link so you can monitor progress in real time.

Do you offer international shipping?

Yes. We ship to many countries worldwide. Rates and delivery times vary by destination and are displayed at checkout. For more information, please see our Shipping page.

How do I get free shipping?

You qualify for free U.S. standard shipping on orders of $150+—every time.

Returns & Refunds

What is your return policy?

We offer a 14-day return window for unused items in their original packaging. For full details, please visit our Return Policy page.

Please note: For technical and administrative reasons, returns of online orders cannot be processed in JJ Hat Center stores. Items purchased in-store may be exchanged or returned with receipt within 14 days in like-new condition for store credit only. No refunds on in-store purchases.

How do I request a refund?

Please include the provided returns form inside your parcel with the item you’re returning, or start a return online and follow the instructions. We’ll notify you as soon as your return is received and processed.

Hats & Headwear

How do I know my hat size?

Wrap a cloth tape measure around your head just above your eyebrows and the tops of your ears. For sizing and conversions, see our Size Chart.

Note that hats often relax back toward their original blocked shape over time. Perspiration, improper storage (temperature fluctuations), and exposure to sun or rain can affect fit. Store your hat in a cool, dry place away from humidity and direct heat, and be mindful of perspiration when wearing it.

If ongoing shrinkage is an issue, that can be normal. Consider sizing up next time and adding one or two strips of cork sizing. It’s usually better to go up a size and “size it in” than to force a smaller hat to fit.

Can I wear my hat in the rain?

Outside of a few true rain hats, most hats are water-repellent, not waterproof. Light drizzle or a little snow won’t ruin most felt hats, but heavy rain and thunderstorms aren’t ideal. Straw hats made from natural fibers should never be worn in the rain—they won’t hold their shape.

If you do get caught out, once indoors snap the brim up and hang the hat so the sides of the brim don’t touch anything (a hat/coat rack or the back of a chair works). Let it air-dry naturally away from heat. If a hat suffers weather damage, don’t discard it—bring it to us and we’ll see what we can do.

How do I take care of my hats?

The best way to store a hat is in a hat box away from heat sources. Purchases include a complimentary hat box. You may line the bottom with odorless cedar chips to help prevent moth damage to felt hats.

Try not to grab your hat at the pinches—put it on and take it off by holding both sides of the brim.

General

How can I contact customer support?

You can reach our team at [email protected]. We’re here to help.

Storm-tested. This solid-color docker hat from the young label Hammaburg exudes cool casualness during outdoor adventures and shore leave. At the same time, a warm wool blend and the head-hugging shape prove that trendy docker hats can also be functional. Traditional ribbed knit and a high-quality finish emphasise the core design of this knitted hat with rolled brim. Men who do not want to go without a trendy accessory, even in stormy times, can wear this turn-up brim hat with a down jacket or sailor jumper. Made in Italy.

One size (approx. 55-59 cm)
Material: 50% wool; 50% acrylic
Length: 16 cm

Born in the vibrant heart of New York in 1911, JJ Hat Center has embodied the art of exceptional hatmaking for more than a century.

Today, it remains the ultimate destination for premium headwear. Step into a world where every hat tells a story and every detail is crafted with care—for those who appreciate the truly rare.

We hope you love your new hat. Each piece we offer is carefully crafted with attention to detail.

If your purchase isn’t quite right, you may return it within 14 days of delivery for a full refund, store credit, or exchange.

Your order will be packed with extra care and shipped quickly.

JJ Hat Center is committed and dedicated to getting your order safely to your destination as promptly as possible. Our fulfillment team takes great care in packing your order so it arrives in perfect condition. Orders usually ship within 48 hours, and often the same day the order is placed.

We use a variety of shipping carriers to make sure we deliver your order as fast as possible. The majority of our orders are shipped via USPS, DHL and UPS. You can see which carrier(s) will deliver your order when you track your package(s).

Orders for in-stock merchandise are processed and shipped within 1-2 business days. We do not operate on Saturdays or Sundays. Please allow extra time for orders placed on weekends or public holidays.

Free U.S. shipping

on Orders Over $175

Hammaburg

Knit Docker Hat

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

How Do I Find the Right Hat Size?

How Do I Measure My Glove Size?

Contact Us

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