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For over 15 years, we have been designing some of the most popular t-shirts and tank tops around. We design, print, and ship out all the t-shirts that we showcase here on our business website. With 10,000+ designs available, we offer designs for just about any interest or topic you can think of. Our customers include A-list celebrities, influencers, and very possibly somebody you know.
Most orders ship out within 3-4 business days from our warehouse in California via USPS 1st class mail.
If you want them ASAP, we offer 2 options...
1.) Choose "expedited manufacturing" in checkout to get a cut in line of other orders to be printed.
2.) Purchase more shirts(we have over 10,000 designs to choose from!). Any package that weighs over 1lb will automatically be shipped USPS priority mail. This is usually 4 mens XL shirts. For womens and kids styles, it may be 5 or more.
Want more info? You can find our Shipping Policy & Manufacturing Info linked in the footer of the site.
Our shirts are designed & printed in northern California. The shirts we use come from a variety of ethically sourced countries and also made in the USA.
We are happy to offer easy exchanges within 30 days of the delivery of your order if you would prefer a different size of the same designs previously ordered. You can find our full return & refund policy as well as the instructions for making an exchange in the footer of the site.
•For most orders, standard shipping is $6.99.
•Shipping with Expedited Manufacturing for most orders is $10.95
You can find our size chart next to the sizing options on any product page. It provides the size along with fabric content and other clothing details for the style & color that you have currently selected. Sizing and fit is a very personal opinion and therefore we do not provide size advice beyond the size chart as some people will find a looser fit more enjoyable while others may find the same size and style too large and vice versa.
Please note: Many styles we offer are gender specific however, the "Mens t-shirt" and "tank" options are sometimes ordered as a unisex option if larger sizes are needed or if the customer prefers the fit and style offered better. The youth t shirts, toddler t shirts, and baby bodysuits can be worn by both boys and girls. Truly something for everyone in the family.
We offer exchanges for 30 days if you need a different size. Our shirts are made when ordered so do not offer a money back guarantee.
Orders that ship internationally(outside of the USA) may be subject to customs processing and various country specific fees and taxes. E.g. VAT. These costs are not included and may vary depending on where items are being shipped.
Our site search allows you to find any t shirts we are currently offering. The search works best with generic and common words rather than lengthy phrases. Please note that we occasionally do remove designs as well.
Credit Cards:Visa, Mastercard, American Express, Discover, JCB, Diners Club International
Accelerated Checkouts:Google Pay, Apple Pay, Shopify Pay, Amazon Pay
We do not accept cash, checks, money orders, or CODs for online purchases. We do not offer in-person purchases at this time.
Is this Math Nerd Gift Square Root 21st Birthday t shirt true to size?
Some people say yes, some no. As with anything related to sizing, even this is a personal opinion. Use the size chart to ensure a best fit.
Is the Math Nerd Gift Square Root 21st Birthday tank top for men or women?
The "Tank" option is the mens tank top option while the "womens muscle tank top" and "womens racerback tank top" are the ladies options. However, some women do wear the mens tank top so that style may be up to personal preference.
Do you offer Math Nerd Gift Square Root 21st Birthday shirts in v-necks for men?
The v-neck shirts are a womens style. We do not currently offer a mens v neck option.