That Guy With Mastiffs Youth T-Shirt – Official Merch | Choose Your Design

Small shirt. BIG dog obsession. Absolutely no shame. 🐾😂

For the little That Guy With Mastiffs fans who know giant dogs give the best cuddles—even when those cuddles involve being completely squished!

This comfy youth unisex Softstyle T-shirt is perfect for school, playdates, dog events, family outings, and showing off their favorite Mastiff wherever the day takes them.

🐾 IMPORTANT — Make Your Selections Before Checkout

Please select your T-shirt size and color using the options provided.

Print Placement: Your chosen Mastiff design is printed large on the FRONT ONLY. Nothing is printed on the back.

THEN use the “Choose Your Favorite Mastiff Design” dropdown to select the artwork you want.

YOU MUST SELECT A MASTIFF DESIGN FROM THE DROPDOWN OR YOU WILL NOT BE ABLE TO ADD THIS ITEM TO YOUR CART. THIS SELECTION IS REQUIRED.

Please double-check all selections before checkout. Because explaining to a disappointed kid why the wrong dog showed up on their shirt is NOT on anyone's fun-parenting bingo card. 😂

Available in youth sizes S–XL. All shirts are unisex; please refer to the size chart poster image for measurements before ordering.

One price. Every size. Because everyone deserves to wear their favorite Mastiff

Pre-Order Information

These youth T-shirts are made to order and will initially run in 1-week pre-order intervals.

I don't keep blank shirts or DTF transfers in stock. Once each pre-order period closes, I order the supplies and personally hand-press the shirts using my commercial heat press when everything arrives.

Orders are completed in the order received. Processing depends on supplier availability and current order volume.

The Mastiffs may demand instant attention, but the shirts need a little production time!

Product Details

• Product: Official That Guy With Mastiffs youth graphic T-shirt
• Style: Youth unisex Softstyle short-sleeve tee
• Fit: Unisex youth sizing; refer to the size chart poster image
• Sizes: Youth S–XL
• Colors: Choose from available T-shirt colors
• Print Method: DTF (Direct to Film) transfers
• Made By: Personally hand-pressed by Mastiff Mama Designs using a commercial heat press
• Print Placement: Large selected Mastiff design on front only; blank back
• Design Selection: Required Mastiff artwork selection from the dropdown

Please Note: Product images are mockups. Actual shirt colors, print colors, design size, and placement may vary slightly. Artwork is adjusted for different youth shirt sizes and may not look identical across all sizes. Colors may also appear different on computers, phones, tablets, and other electronic devices compared to the finished item.

Processing, Shipping & Care

• Made to order in initial 1-week pre-order intervals
• Blank shirts and DTF transfers ordered after each pre-order closes
• Individually hand-pressed after supplies arrive
• Minor handmade variations or imperfections may occur
• Processing depends on supplier availability and order volume
• Tracking provided once shipped
• Double-check youth size, color, and Mastiff design before checkout
• Wash inside out in cold water
• Remove promptly from the washer
• Hang dry for best results; tumble dry low if needed
• Do not bleach
• Do not iron directly over the design

Care line: Keep it cute, keep it cold, and please don't cook the T-shirt in the dryer. The Mastiffs already bring enough chaos to the laundry department. 😂

Supporting a Bigger Purpose

Part of the official and exclusive That Guy With Mastiffs merch collection, available only through Mastiff Mama Designs! Josh shares 25% of That Guy With Mastiffs profits directly with families of children and veterans working to get service dogs. Cute merch, big mastiff energy, and a purpose worth supporting. 🐾

Customer Contact & Gift Orders

Questions about youth sizing, availability, or special requests? Email mastiffmamadesigns@gmail.com BEFORE ordering.

Sending this as a gift? Enter the recipient's shipping address at checkout, then email your order number and the personalized gift message you'd like included.

Please allow 24–48 business hours for a response.

Shop Hours: Monday–Friday, 10 a.m.–4 p.m. PST. Closed weekends, standard holidays, and posted family holidays.

A Note About Product Images

Some lifestyle mockups may be created or enhanced using AI technology for display purposes only. AI-generated backgrounds and mockups are not the physical product.

Actual youth T-shirt colors, print size, and placement may vary slightly.