The navy blue flat cap from Hatloom is a breathable cotton hat designed to offer adjustable flat cap sizes for a perfect fit and timeless style. This navy blue flat cap combines traditional flat cap craftsmanship with modern comfort, delivering a stylish men's hat that enhances any outfit while keeping you cool and comfortable all day. Made from 100% breathable cotton, this cotton flat cap promotes airflow and moisture control to prevent overheating and sweat buildup. With adjustable flat cap sizes ranging from 54 to 62 cm (21.3 to 24.4 inches), it ensures a secure, customized fit without slipping, suitable as a unisex flat cap for diverse wardrobes.
Key features of this navy blue flat cap include:
This men's flat cap offers excellent temperature regulation by facilitating air circulation to keep your head cool during warm weather or extended use. The adjustable strap secures the flat cap for men firmly in place without discomfort, while the lightweight design allows comfortable wear throughout the day without pressure points. The navy flat hat color provides versatile appeal, making it easy to coordinate with various outfits year-round.
Hatloom backs this stylish men's hat with rigorous material testing, guaranteeing long-lasting durability and excellent color retention even after frequent use. Customers consistently praise the perfect fit and classic look of this cotton flat cap, highlighting its balance of heritage style and modern function as key reasons for its popularity.
Additional benefits include:
Upgrade your hat collection today with this unisex navy blue flat cap that merges heritage style with modern functionality. Designed to withstand everyday wear while keeping you looking sharp and feeling comfortable, this breathable cotton hat is the perfect accessory for anyone seeking a stylish men's hat with adjustable sizing and timeless appeal.
SHIPPING & RETURNS
International Free Shipping
We offer free international shipping on orders over $50, as well as paid express shipping.
Delivery times: 8–12 days (free shipping) / 5–7 days (express shipping).
Tariffs & Duties
We cover all tariff and duty charges for U.S. orders.
For international orders, local customs fees may apply depending on your country.
Purchase Protection
Shop confidently on Hatloom — if something goes wrong with your order, we've got your back.
Read our return policy
CRAFTSMANSHIP
Every hat on Hatloom is carefully selected from trusted manufacturers and goes through quality control before reaching you — because only the best makes it to our store.
HOW TO DETERMINE YOUR SIZE
Measure the circumference of your head about 1 cm above your ears using a soft tape measure.
Size S: 54–55 cm (21.3–21.7")
Size M: 56–57 cm (22.0–22.4")
Size L: 58–59 cm (22.8–23.2")
Size XL: 60–61 cm (23.6–24.0")
Most hats are adjustable (55–59 cm). When in doubt, size up.
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