New Era NFL 2018 Sideline Official 39THIRTY Flex Hat - Low-Profile Fit

In this review of the New Era Men's NFL 2018 Sideline Official 39THIRTY Flex Hat, the bottom line is simple: buy it if you want an officially licensed sideline-style cap that balances performance fabric with a low, comfortable fit. The reviewer found the hat best for fans who prioritize authentic team styling and breathable materials, thanks to New Era's HEX TECH performance fabric. Construction and embroidery feel durable, and the adjustable fabric strap with slide buckle makes it easy to fine-tune the fit despite the hat's overall low profile.

Key Features

• Official NFL licensing: Recognizable sideline branding ensures the cap is an authentic team accessory for game day wear.
• HEX TECH performance fabric: The cooling, moisture-managing material keeps the head more comfortable during warm-weather events or long outdoor use.
• Adjustable fabric strap: A slide buckle strap lets the wearer tighten or loosen the fit while preserving the hat's low-profile look.
• Raised embroidered graphics: Detailed, elevated stitching gives the team logos visual depth and a finished appearance that holds up to regular wear.
• 39THIRTY flex construction: The flexible crown offers a snug, contoured shape that sits closer to the head than boxier caps.

Who It's For

This hat is aimed at NFL fans who attend games, tailgates, or outdoor activities and want an authentic sideline look combined with performance fabric. It suits buyers who prefer a low-fit style and like the security of an adjustable strap rather than a hard plastic snapback.

Shoppers who prefer a taller crown or a traditional structured cap may want to look elsewhere; those with very specific head shapes who need a pronounced dome may find the hat lays flatter than expected. The hat is best for fans who care about authentic team graphics and breathable materials more than a roomy fit.

Pros & Cons

Pros

• Well-made construction and raised embroidery give the hat a premium look and long-lasting detail.
• Comfortable, low-profile fit that works well under helmets or with casual wear.
• HEX TECH fabric provides cooling and moisture management for active use.
• Adjustable fabric strap with slide buckle allows simple, precise sizing adjustments.

Cons

• Sizing opinions are mixed; the close, low profile may feel too flat for those expecting a higher crown.
• Some buyers question value for money despite the quality, so it may not be ideal for budget-focused shoppers.

Specifications

Brand	New Era
Model	2018 NFL Sideline Official 39THIRTY Flex Hat
Licensing	Officially licensed by the NFL
Fabric	HEX TECH performance fabric
Fit	Low-profile, flexible 39THIRTY crown
Adjustment	Fabric strap with slide buckle
Graphics	Embroidered with raised details

Our Verdict

The New Era 39THIRTY Sideline Flex Hat is a solid pick for fans who want an authentic, breathable game-day cap with quality embroidery and an adjustable strap. It excels when a low-profile fit and cooling HEX TECH fabric matter, though those seeking a taller crown or a strict budget option may prefer alternatives.

Frequently Asked Questions

Is this hat officially licensed?
Yes, it is officially licensed by the NFL and made by New Era with sideline branding.

Does the hat have an adjustable closure?
Yes, it uses a fabric strap with a slide buckle for adjustment rather than a snapback.

How does the fit run?
The 39THIRTY has a low-profile, flexible crown; many find it comfortable, though some say it sits flatter on the head than taller caps.