I'm Dead Serious About Math T-Shirt Unisex T-shirt

I'm Dead Serious About Math T-Shirt Ladies Tee

I'm Dead Serious About Math T-Shirt Crewneck Sweatshirt

I'm Dead Serious About Math T-Shirt Unisex Hoodie

I'm Dead Serious About Math T-Shirt Long Sleeve

I'm Dead Serious About Math T-Shirt Unisex Tank

I'm Dead Serious About Math T-Shirt V-Neck T-Shirt

I'm Dead Serious About Math T-Shirt Youth T-Shirt

I'm Dead Serious About Math T-Shirt Mugs

I’m Dead Serious About Math T-Shirt

Size Guide and Size Chart

Inches
Centimeters

SIZE	WIDTH	LENGTH
S	18 in	28 in
M	20 in	29 in
L	22 in	30 in
XL	24 in	31 in
2XL	26 in	32 in
3XL	28 in	33 in
4XL	30 in	34 in
5XL	32 in	35 in

SIZE	WIDTH	LENGTH
S	46 cm	71 cm
M	51 cm	74 cm
L	56 cm	76 cm
XL	61 cm	79 cm
2XL	66 cm	81 cm
3XL	71 cm	84 cm
4XL	76 cm	86 cm
5XL	81 cm	89 cm

5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
Heavyweight classic unisex tee
Taped neck and shoulders; Tearaway label
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
S	17.25 in	25.5 in
M	19.25 in	26 in
L	21.25 in	27 in
XL	23.25 in	28 in
2XL	25.25 in	28.5 in
3XL	27.25 in	29 in

SIZE	WIDTH	LENGTH
S	43.8 cm	64.8 cm
M	48.9 cm	66 cm
L	54 cm	68.6 cm
XL	59 cm	71 cm
2XL	64 cm	71.8 cm
3XL	69.2 cm	73.7 cm

5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
Heavyweight classic unisex tee
Taped neck and shoulders; Tearaway label
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
S	20 in	26 in
M	22 in	27 in
L	24 in	28 in
XL	26 in	29 in
2XL	28 in	30 in
3XL	30 in	31 in
4XL	32 in	32 in
5XL	34 in	33 in

SIZE	WIDTH	LENGTH
S	50.8 cm	66 cm
M	55.9 cm	74 cm
L	68.6 cm	71 cm
XL	66 cm	73.7 cm
2XL	71 cm	76 cm
3XL	76.2 cm	78.7 cm
4XL	81.3 cm	81.3 cm
5XL	86.4 cm	83.8 cm

8 oz; 55% cotton/45% polyester
Air jet yarn for a softer feel and no pilling
1x1 athletic rib cuffs and waistband with spandex; Double-needle stitching
Care: Machine wash cold; Tumble dry low
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
S	20 in	26 in
M	22 in	27 in
L	24 in	28 in
XL	26 in	29 in
2XL	28 in	30 in
3XL	29 in	32 in
4XL	32 in	33 in
5XL	34 in	34 in

SIZE	WIDTH	LENGTH
S	50.8 cm	66 cm
M	55.9 cm	74 cm
L	68.6 cm	71 cm
XL	66 cm	73.7 cm
2XL	71 cm	76 cm
3XL	73.7 cm	81.3 cm
4XL	81.3 cm	83.8 cm
5XL	86.4 cm	86.4 cm

8 oz 55/45 cotton/polyester
Air jet yarn creates a smooth, low-pill surface
Double needle stitching; Pouch pocket; Unisex sizing
Care: Machine wash cold; Tumble dry low
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
S	18 in	28 in
M	20 in	29 in
L	22 in	30 in
XL	24 in	31 in
2XL	26 in	32 in
3XL	28 in	33 in
4XL	30 in	34 in
5XL	32 in	35 in

SIZE	WIDTH	LENGTH
S	46 cm	71 cm
M	51 cm	74 cm
L	56 cm	76 cm
XL	61 cm	79 cm
2XL	66 cm	81 cm
3XL	71 cm	84 cm
4XL	76 cm	86 cm
5XL	81 cm	89 cm

6.1-ounce, 100% cotton
Ash is 99% cotton, 1% poly; Sport Grey is 90% cotton, 10% poly; Dark Heather is 50% cotton, 50% polyester
Double-needle neck, sleeves and hem; Unisex sizing; consult size chart for details
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
XS	16 in	27 in
S	18 in	28 in
M	20 in	29 in
L	22 in	30 in
XL	24 in	31 in
2XL	26 in	32 in
3XL	28 in	33 in

SIZE	WIDTH	LENGTH
XS	40.6 cm	68.6 cm
S	45.7 cm	71 cm
M	50.8 cm	73.6 cm
L	55.9 cm	76.2 cm
XL	61 cm	78.7 cm
2XL	71 cm	83.8 cm
3XL	81.3 cm	81.3 cm

5.3 oz, 100% cotton preshrunk jersey knit tank top
Banded neck and arm holes; Tearaway label
Double-needle bottom hem
Decoration type: Direct To Garment Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
XS	14 in	27 in
S	15 in	27.5 in
M	16 in	28 in
L	17 in	28.5 in
XL	18 in	29 in
2XL	19 in	29.5 in

SIZE	WIDTH	LENGTH
XS	35.6 cm	68.6 cm
S	38 cm	69.8 cm
M	40.6 cm	71.1 cm
L	43.2 cm	72.4 cm
XL	45.7 cm	73.7 cm
2XL	48.3 cm	74.9 cm

4 oz, 60% combed ring-spun cotton/40% polyester jersey
30 singles
Fabric laundered for reduced shrinkage; Runs small, we suggest ordering up
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
YXS	16 in	20.5 in
YS	17 in	22 in
YM	18 in	23.5 in
YL	19 in	25 in
YXL	20 in	26.5 in

SIZE	WIDTH	LENGTH
YXS	40.6 cm	52 cm
YS	43.2 cm	55.9 cm
YM	45.7 cm	59.7 cm
YL	48.6 cm	63.5 cm
YXL	50.8 cm	67.3 cm

5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
Heavyweight classic unisex tee
Taped neck and shoulders; Tearaway label
Decoration type: Digital Print

Inches
Centimeters

SIZE	WIDTH	LENGTH
YS	14 in	17 in
YM	16 in	19.5 in
YL	18.75 in	23 in
YXL	20.5 in	24.5 in

SIZE	WIDTH	LENGTH
YS	35.5 cm	43.2 cm
YM	40.6 cm	49.5 cm
YL	47.6 cm	58.4 cm
YXL	52.1 cm	62.2 cm

7.75-ounce, 50% cotton, 50% polyester
No drawcord on kids' hoodies
We suggest ordering one or two sizes up for a fuller fit; Please refer to size chart for actual garment measurements
Decoration type: Digital Print

Nov 21

Order placed After you place an order, it will take us 2-5 business days to prepare the item for you.

Nov 25 - Nov 28

Order ships Your item will be packed for shipping and we will email you a tracking code.

Dec 02 - Dec 05

Delivered! Estimated to arrive at your doorstep Dec 02 - Dec 05!

I’m Dead Serious About Math T-Shirt.
Looking to make a statement about your passion for math? Then put on our Dead Serious About Math T-Shirt today, and let your shirt do the talking! Made from high-quality materials, this t-shirt is both comfortable and durable, making it perfect for everyday wear. Plus, the bold and eye-catching design is sure to turn heads and grab attention wherever you go. So embrace your love for the world of numbers and equations and buy your Dead Serious About Math T-Shirt now!

Thank you for visiting and shopping at Teetiv.com. Please see the details below for the shipping information.

30-DAY RETURN POLICY

RECEIVE WRONG OR DAMAGED ITEMS? NO PROBLEM, WE WILL SEND YOU A NEW ITEM. WE DO JUST ABOUT ANYTHING TO MAKE THE CUSTOMERS HAPPY!

We will gladly issue you a replacement item or issue a refund back to your original form of payment for any of the following reasons:

The printed image is not clear or not in the center of print area.

Package received wrongly against the order.

Damaged due to delivery: torn, dirty…

The order is not in the right size, color or style compared to the order.

Other mistakes caused by us…

Processing Time

Printed apparel, poster, mug (normal/ partial printing): 2-5 business days

It takes 1 – 2 days to ship your order to our warehouse. Put your name and address on it and ship it out.

Manufacturing times for this option vary more around busier times of the year or during extreme circumstances such as covid-19 shutdowns.

Shipping Time

United States:
+ Printed apparel, poster, mug (normal/ partial printing): 5-7 business days
* Shipping to Alaska, Hawaii, Puerto Rico, and unincorporated territories of the United States can take an additional 7 – 14 business days.
International:
+ Printed apparel, poster, mug (normal/ partial printing): 10-20 business days

Shipping Cost

US Standard shipping price is $5.99 per item & each additional item is: $1.99
The International Standard shipping price is $9.99 per item & each additional item is: $4.99

Tracking Number

We provide tracking numbers for all orders.

Your tracking numbers may take up to 1 – 5 business days after an order has been processed for tracking data to show.

Tracking numbers will be automatically sent to you via the email provided in our system.

Please Note:

We do not guarantee shipping or arrival dates.
Manufacturing during most of the year takes between 2-5 business days (Mon-Fri); however, it can take more than a week during the heaviest shopping times of the year. Extreme circumstances such as covid-19 may delay order manufacturing and shipping by an additional week or more.
All manufacturing and shipping times are estimates and will vary.
Some of our popular designs may be pre-printed and may ship out faster than less commonly ordered designs/style/color combinations.