It's A Good Day To Solve A Sudoku Puzzle - Positive Tee - Sudoku T-Shirt - Daily Tee - Optimism T-Shirt - Puzzler Tee
Free USA Shipping. 30-day Free Returns. No Minimum Purchase.
Delivery and Shipping
Delivery and Shipping
Kooskadoo offers FREE SHIPPING & FREE RETURNS on all orders delivered to a USA destination.
INTL SHIPPING: Shipments to destinations outside the USA will be charged a $7 USD flat rate. International customers are responsible for any and all additional charges (ie. customs, VAT, taxes, etc.).
FREE USA RETURNS: We want you to be happy, but we know sometimes it just doesn't work out. Kooskadoo has a 30-day return policy for most items. You must request, and have been issued an RMA Number before you return any item to us. We will choose the shipping carrier.
Full details can be viewed on our Returns & Refunds page, and on our Shipping & Delivery page.
Product Details
Product Details
Bella + Canvas is the exclusive manufacturer of all apparel sold at Kooskadoo. All tees feature a crew neck, short sleeves and are designed with superior Airlume combed and ring-spun cotton. Bella + Canvas tees feel soft and lightweight, with just the right amount of stretch. Bella + Canvas tees are comfortable and flattering for both men and women.
Features: Side-seamed construction. Pre-shrunk fabric. Retail fit. Unisex sizing. Shoulder to shoulder taping. 100% No Sweatshops & Eco-Friendly.
- Style: 3001
- Short-Sleeve
- Black, Navy, and White colors are 100% combed and ring-spun cotton
- Athletic Heather is 90% combed and ring-spun cotton, 10% polyester
- Fabric weight: 4.2 oz (142 g/m2)
- Blank shirts are sourced from various locations, including the USA, Guatemala, Nicaragua, Mexico, and Honduras.
- Printing is performed at various locations worldwide, including the USA and Canada.
Care information
Care information
The materials used for this garment have been carefully selected. We recommend that you read the care instructions on the label found inside this garment.
Tips to preserve quality over time:
- Machine wash cold, inside-out, gentle cycle with "mild detergent" and similar colors.
- Use non-chlorine bleach, only when necessary.
- No fabric softeners.
- Tumble dry low, or hang-dry for longest life.
- Cool iron inside-out, only if necessary.
- Do not iron decoration.
- Do not dry clean.
Made Just For You
Made Just For You
This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!
Feel good about what you wear. 100% No Sweatshops. Eco-Friendly.
We'd love to see you wearing this tee.
Take a photo of yourself wearing this tee and post it on Instagram and/or Twitter. Be sure to mention @Kooskadoo and add the hashtag #KooskadooTee. If selected, we'll include your photo in the items photo gallery and in our Instagram Gallery (coming soon), and you'll recieve 25% off your next purchase.
Bella+Canvas Size Guide
PRODUCT MEASUREMENTS
NOTE: Measure one of your products at home and compare with the measurements you see in this guide.
Measurements are provided by suppliers. Product measurements may vary by up to 2″ (5 cm).
A - Length
Place the end of the tape beside the collar at the top of the tee (Highest Point Shoulder). Pull the tape measure to the bottom of the shirt.
B - Width
Place the end of the tape at the seam under the sleeve and pull the tape measure across the shirt to the seam under the opposite sleeve.
MEASURE YOURSELF

A - Length
Place the end of the tape beside the collar at the top of the tee (Highest Point Shoulder). Pull the tape measure to the bottom of the shirt.
B - Chest
Measure yourself around the fullest part of your chest. Keep the tape measure horizontal.
INCHES
| Size | Length | Chest | Width |
| XS | 27 | 31 - 34 | 16 ½ |
| S | 28 | 34 - 37 | 18 |
| M | 29 | 38 - 41 | 20 |
| L | 30 | 42 - 45 | 22 |
| XL | 31 | 46 - 49 | 24 |
| 2XL | 32 | 50 - 53 | 26 |
| 3XL | 33 | 54 - 57 | 28 |
| 4XL | 34 | 58 - 61 | 30 |
| 5XL | 0 | 0 | 0 |
CENTIMETERS
| Size | Length | Chest | Width |
| XS | 68.6 | 78.7 - 86.4 | 41.9 |
| S | 71.1 | 86.4 - 94.0 | 45.7 |
| M | 73.7 | 96.5 - 104.1 | 50.8 |
| L | 76.2 | 106.7 - 114.3 | 55.9 |
| XL | 78.7 | 116.8 - 124.5 | 61.0 |
| 2XL | 81.3 | 127.0 - 134.6 | 66.0 |
| 3XL | 83.8 | 137.2 - 144.8 | 71.1 |
| 4XL | 86.4 | 147.3 - 154.9 | 76.2 |
| 5XL | 0 | 0 | 0 |
Description
Description
Crafted for comfort that lasts from your morning coffee to your evening victory lap, this premium tee is made from the incredibly soft, breathable fabric of Bella Canvas. The relaxed unisex fit is perfect for settling into your favorite thinking spot and dedicating some quality time to your brain. It’s the ultimate attire for turning an ordinary day into a great one, all while feeling fantastic.
Looking for a gift that spreads positivity and celebrates a healthy, happy hobby? You’ve found it! This shirt is the ideal present for birthdays, holidays, or just to brighten someone’s day. It’s a wonderfully uplifting gift for the problem-solver in your life, reminding them that every day holds the potential for a small, satisfying triumph.
Wearing this shirt is like sharing a sunny outlook with the world. It connects you with a community of positive thinkers and dedicated puzzlers who find happiness in life's simple challenges. It’s a conversation starter that inspires others to take a mindful break and do something they truly love. It’s a statement that you choose to make each day good, one number at a time.
So, why wait for a good day to come to you? Create one! Embrace the positive energy and the promise of a puzzle solved. This tee is a must-have for your own collection and a brilliant, upbeat gift for any optimist with a love for logic.
Order your "It's A Good Day To Solve A Sudoku Puzzle" t-shirt from Kooskadoo today, and make every day a good day!
Product Reference Number: KT-1835
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