What sizes do you offer?

We offer a wide range of sizes to ensure everyone can find their perfect fit! Our standard sizes include XS, S, M, L, XL, and XXL. For some products, we also offer extended sizes. You can check the size chart on each product page for specific measurements and ensure you choose the right size for you. 😊

What material are the t-shirts made from?

Most of our t-shirts are crafted from 100% organic cotton, ensuring maximum comfort while promoting sustainability. This means you get soft, breathable fabric that's gentle on your skin and better for the environment. On top of that, the organic cotton is durable, making your t-shirt last longer through numerous wears and washes. For a different style, we offer all-over print t-shirts made of polyester, providing vibrant and lasting prints for those who love a pop of color in their wardrobe. So, whether you prefer the natural, sustainable feel of organic cotton or the bold, lively designs of polyester, we’ve got something for everyone.

How should I care for my DipaliZ t-shirt?

Caring for your DipaliZ t-shirt is simple and helps keep it looking great: Wash Cold: Turn your t-shirt inside out and wash in cold water with similar colors to prevent fading and maintain the print quality. Gentle Cycle: Use a gentle cycle to avoid excessive agitation, which can cause wear and tear. Mild Detergent: Opt for a mild detergent to preserve the fabric's integrity and color. Avoid Bleach: Steer clear of bleach or any harsh chemicals that could damage the material and design. Air Dry: For the best results, air dry your t-shirt. If using a dryer, choose a low heat setting to avoid shrinking. Ironing: If needed, iron your t-shirt inside out on a low heat setting. Avoid ironing directly over the print. With these care tips, your DipaliZ t-shirt will stay comfy and stylish for a long time!

Can I return or exchange a t-shirt if it doesn’t fit?

Absolutely! We offer a hassle-free 30-day return and exchange policy. If for any reason you're not satisfied with your purchase, you can return or exchange it within 30 days. Just make sure the t-shirt is unworn, unwashed, and in its original condition with all tags intact. Once we receive the item, we’ll process your request promptly, so you can shop with confidence. Your satisfaction is our priority.

Are there any special care instructions for printed designs?

Yes, caring for DipaliZ printed designs requires some special attention to keep them looking fresh: Turn Inside Out: Always wash your t-shirt inside out to protect the printed design from rubbing and fading. Use Cold Water: Wash with cold water to maintain the color and vibrancy of the print. Gentle Cycle: Opt for a gentle cycle to reduce wear and tear on the fabric and print. Mild Detergent: Use a mild detergent free from bleach to prevent any damage to the design. Avoid High Heat: Skip the dryer or use a low heat setting. High heat can cause the print to crack or peel over time. Skip the Iron: If ironing is necessary, make sure to iron the t-shirt inside out and avoid direct contact with the printed area. With these steps, your DipaliZ printed designs will stay sharp and stylish for many wears to come!

Do you offer custom t-shirt designs?

Currently, we don't provide custom design services. However, we pride ourselves on offering a diverse range of styles to suit various tastes and preferences. Whether you're looking for classic staples, trendy pieces, or unique patterns, our collection has something for everyone. Explore our selection, and we're confident you'll find designs that resonate with your style.

Keep calm and calculate the vector tee by DipaliZ in heavyweight cotton

DipaliZ vector arrow emblem above stacked centred lettering on white cotton

DipaliZ Keep Calm Math Tee Ultra Cotton Premium Apparel

Sale price $19.42

Shipping calculated at checkout

Color: White

White

Size

2XL

3XL

4XL

5XL

Quantity

Order by Fri, Dec 11 for Christmas delivery

Printed for you
in 1–3 business days
Ships within the USA
Exact cost at checkout
30-day returns
Return policy
Plants trees
in Michigan
Every $20 you spend at DipaliZ plants a tree in Michigan's Au Sable State Forest.

Shipping & Returns

Printing: Made to order in 1–3 business days.

Shipping: Ships within the USA. Shipping cost is calculated from your address at checkout.

Returns: Returns accepted within 30 days. Orders go to print right away, so they can't be canceled once placed. Read the return policy

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$20.98 $32.68

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Keep Calm and Calculate Vector

About This Item

This DipaliZ maths tee is a unisex ultra cotton t-shirt in 100% cotton with a heavyweight classic fit. The print reads Keep calm and calculate the vector, a study-hall twist on the wartime poster line. The shirt is made in white only, in sizes S through 5XL. Physics students, engineers and maths teachers are the people who will finish the joke for themselves.

Product details

Fabric: 100% cotton, heavyweight ultra cotton knit
Sizes: S, M, L, XL, 2XL, 3XL, 4XL, 5XL
Color: white
Neckline and fit: crew neck, regular classic fit
Print method: direct-to-garment printing of original DipaliZ artwork

The story behind this design

The layout follows the poster it is parodying: a small emblem above, then the words stacked in centred blocks of decreasing weight. Instead of a crown, a vector arrow sits at the top, drawn with a clean arrowhead and a short tail. Two ink colors only, black with the arrow picked out in a single accent, which keeps the parody obvious without copying the original's palette.

Frequently asked questions

Q: What does this maths tee say?
A: The print reads Keep calm and calculate the vector.

Q: What color and sizes are made?
A: White only, in sizes S to 5XL.

Q: What is the fabric?
A: The shirt is 100% cotton in a heavyweight ultra cotton knit with a classic fit.

Q: Is there a matching lawyer version?
A: Yes. DipaliZ prints a Keep calm and lawyer up design on the same white ultra cotton shirt, listed separately.

Care

Machine wash cold with like colors, inside out. Tumble dry low. The fabric, single color and size run stated come from this listing's variant options and material field.

Original DipaliZ artwork. Brand new, made to order by print-on-demand, and shipped within the usa.

The DipaliZ promise: Every order above $20 plants 1 tree & removes 1 plastic bottle through Arbor Day Foundation reforestation programs in Au Sable State Forest, Michigan.

Printed to order in 1–3 business days · Ships within the USA · 30-day returns

Meet the maker

A one-woman shop in Michigan

DipaliZ is run by Dipali, a photographer and designer in Michigan. Every piece is printed to order for you in the USA. Every $20 you spend at DipaliZ plants a tree in Michigan's Au Sable State Forest.

Designed in Michigan
Printed to order in the USA
30-day returns

Read our story