Fire Engine Hats
Description: A detailed scientific illustration of a Carnot cycle on a pressure-volume diagram, with its hot and cold isotherms T_H and T_C and two adiabats, above the maximum efficiency η = 1 − Tc/Th, set against a deep dark background. In 1824 the French engineer Sadi Carnot studied the efficiency of heat engines and showed that it is limited by the temperatures of the hot and cold sources. His work laid the foundation of thermodynamics. A gift idea for mechanical engineers, makers and engineering students, and a fitting piece for a workshop, office or study.
Carnot Cycle on a Pressure-Volume Diagram, Heat Engine Efficiency Hat
by Science Design
$12 $19
Description: Perfect for kids and boys who are obsessed with emergency vehicles. Features the quote Just A Boy Who Loves Fire Trucks. Ideal for any fire engine fan.
Just A Boy Who Loves Fire Trucks Kid Fire Engine Enthusiast Hat
by Fiesta of Pets
$12 $19
Description: A playful firefighter spouse design featuring a detailed vintage-style red fire engine and bold “Wee Woo Wife” siren humor. Perfect for proud firefighter wives, first responder spouses, fire department families, and anyone who loves fire truck culture and emergency service humor. A fun gift idea for birthdays, station events, holidays, or everyday first responder pride.
Description: This design is for firefighters, fire truck enthusiasts, and emergency services personnel. Features the saying Easily Distracted By Fire Trucks, perfect for anyone who loves fire engines and rescue vehicles.
Easily Distracted By Fire Trucks Firefighter Emergency Services Fire Engine Lover Hat
by Belio
$12 $19
Description: Dennis classic 1980s British fire engine minimalist outline line drawing special Christmas edition featuring Santa and Rudolph
Dennis classic 1980s British fire engine Christmas special edition Hat
by soitwouldseem
$12 $19
Description: 2nd birthday fire truck design for toddler boys and girls turning 2 years old with vehicles of the fire department from boat and helicopter to fire engine and a fireman with cat
Fireman Firefighter Fire Trucks Toddlers 2 Birthday Hat
by samshirts
$12 $19
Description: Answer the emergency call in roaring retro action with this bold 'Wee Woo Squad' fire truck design! Features a classic red-and-yellow firefighting engine speeding forward with flashing emergency lights, flanked by rugged vintage varsity typography. The premier graphic top for fire truck obsessed toddlers and kids.
Description: Celebrate the legendary heritage of American motorcycling with this ultra-vintage 1928 Indian Scout 101 design. Widely recognized by enthusiasts as the best-handling vintage motorcycle ever engineered, this classic V-twin machine is captured in a striking retro aesthetic. The distressed layout pairs the timeless motorcycle with a vibrant fire sunset over an open desert highway, complete with rugged cactus silhouettes and a textured finish. An ideal match for antique bike collectors, gearheads, and vintage chopper fans.
1928 Indian Scout 101 Vintage Sunset American Motorcycle Hat
by DRIVEN MACHINES
$12 $19
Description: Retro sunset background with a detailed heavy-duty pumper. Perfect for fire engine fans and vintage vehicle lovers.
Funny-Firefighter Art for Men Women Kids Fire Truck Fireman Wee Woo Squad Hat
by Lucenzo
$12 $19
Description: Daddy Of The Birthday Boy. This Design Is For Fathers Celebrating Their Son's Birthday. Perfect For Dads Of A Birthday Boy Who Loves Fire Trucks And Firefighter Themes.
Daddy Of The Birthday Boy Fire Truck Dad Son Celebration Hat
by Belio
$12 $19
Description: Join the bravest crew in town with this classic 'Wee Woo Squad' fire truck design! Highlights a rugged vintage red-and-white fire engine viewed straight-on with emergency beacons blazing between bold distressed varsity typography. A standout, high-energy graphic for aspiring junior firefighters.
Wee Woo Squad Vintage Red Fire Engine Truck Frontal Art Hat
by uunn
$12 $19
Description: Honor dual-first-responder households with this bold shield crest design. Combining medical ER triage and fire engine company emblems under "Two Services, One Home", this graphic makes a meaningful gift for firefighter and nurse couples.
First Responder Couple ER Nurse Firefighter Shield Crest Hat
by PopArtyParty
$12 $19
Description: Show your pride for the fire department with this bold rescue graphic! Set against blazing flames, crossed axes, and a classic red engine, it highlights "I Still Play With Fire Trucks." Perfect for firefighters, first responders, firemen, and rescue workers. Great for station shifts, parades, or as a proud gift for family members in service.
I Still Play With Fire Trucks Funny Firefighter Engine Rescue Hat
by PhotoSphere
$12 $19
Description: Engine 289 FDNY Ladder 138 Corona Tigers Queens, N.Y.C. For New York City Fire Department Members, Supporters, And First Responders. Celebrate The Fire Service And Dedicated Firefighters.
Engine 289 FDNY Ladder 138 Corona Tigers Queens, N.Y.C. Fire Department Firefighter Hat
by graffiti_artisan_studio
$12 $19
Description: Race to the rescue in high-speed retro fashion with this dynamic 'Wee Woo Squad' fire truck design! Displays a classic red-and-white fire engine bursting forward with flashing rooftop lights and fiery speed trails beneath bold collegiate lettering. The quintessential action shirt for fire truck-loving kids.
Description: Pretend I'm A Fire Truck. This humorous design targets kids and adults who love emergency vehicles, fire trucks, and imaginative play. Perfect for firefighter supporters and those seeking a playful costume.
Pretend I'm A Fire Truck Funny Kids Adult Costume Emergency Vehicle Hat
by Belio
$12 $19
Description: A bold fire truck design paired with playful siren-inspired humor for firefighters, first responders, rescue crews, and emergency vehicle fans. Perfect for fire department families, firefighter supporters, fire truck lovers, and anyone who enjoys funny emergency service designs. A fun gift idea for birthdays, holidays, station crews, and everyday firefighter pride.
Description: Cool monster truck fire engine design for little heroes who love rescue vehicles and big wheels.
Big Wheels Fire Truck Firefighter Kids Boys Monster Truck Hat
by Mounia Terma Tabi3ia
$12 $19