Golden Thunder

$14.00

T-Shirt Style: Classic – Soft Cotton

Classic – Soft Cotton Premium – Super Soft

Print Location: Full Back & Small Front

Full Back & Small Front Full Front

Size: S

Size Chart

Men's/Unisex

Guys, choose your usual size for a regular fit or a size up for a relaxed fit. Girls, choose one size down for a regular fit or your usual size for a relaxed fit.

Size	Width (inches)	Length (inches)	Sleeves (inches)
S	18.5	28	6.5
M	20	29	7
L	22	30	8
XL	24	31	8
2XL	26	32	9
3XL	28	33	9.5
4XL	30	34	9.5
5XL	32	35	9.5

Steps to a Happy Size

1. Grab your favorite t-shirt.

2. Measure the width and length.

3. Note there will be minor shrinkage of 0.5" - 1" after washing, which is standard for cotton 101.

How We Measure

Measurement Guide

☕ 4 Classic Black Tees for $62 – Code: 4for62

🍃 5 Classic Natural Tees for $56 – Code: 5for56

🛒 15% Off Your First Order – Code: SHOP15

Fast shipping across the USA

Easy returns

Exclusive Koioki design
Premium & Heavyweight are combed ring-spun cotton
100% cotton unisex fit – see size chart
Retail fit with vibrant prints
High-quality direct-to-garment printing for lasting color
Slight shrinkage in dryer
Ethically sourced
Made-to-order 🌿

Classic style: Made with high-quality natural cotton. The small specks you may notice are part of the natural cotton fibers, adding to the authenticity and charm of your shirt!

Pickup available at Koioki

Usually ready in 2-4 days

Golden Thunder

Classic – Soft Cotton / Full Back & Small Front / S

Koioki

Pickup available, Usually ready in 2-4 days

1531 West 13th Street
Suite M
Upland CA 91786
United States

📦 Shipping & Returns

Your order will be freshly printed just for you. Most of our products are made-to-order, giving you top-notch quality and a more sustainable choice.

We ship anywhere in the USA using reliable couriers. Estimated times below include both printing and delivery 👇

Standard	Express
5-8 business days	3-5 business days

Returns for store credit or replacement within 60 days!

👕 Size & Fit

Our Natural Tees are available in Premium and Classic styles, both crafted with a retail unisex fit for a modern look that’s close to the body without being too tight. Made from breathable 100% cotton, they offer comfort and style in every wear. Classic uses high-quality natural cotton, so you may notice small specks in the fabric — a natural characteristic that adds authenticity and charm. All styles may shrink slightly after machine washing and drying.

For a standard fit, men should choose their usual size, or go up a size for a relaxed look. For women, we suggest selecting one size down for a fitted look, or your regular unisex size for a comfortable, slightly looser fit.

For precise measurements, check the size chart above 👆.

😎 Keep Your Koioki Tee Fresh

Flip It: Always flip your tee inside out before washing to keep that artwork poppin’.

Wash Cold, Stay Cool: Toss it in with cold water—keeps the fit and the vibe just right.

Gentle Vibes Only: Set your washer to gentle mode. Your tee (and the design) will thank you.

Chill on the Detergent: Use a mild detergent—no need to go heavy, let’s keep it smooth.

Bleach? Nah. Keep that harsh stuff away—no fading or ruining your look here.

Air Dry for the Win: Hang it up to dry for max freshness. If you’re in a hurry, low heat in the dryer works too.

No Hot Presses: If you need to iron, avoid the design. Flip the tee inside out or cover it up—let's keep the art clean.

🌿 Produced with eco-friendly practices

Every Koioki piece is made-to-order using the latest eco-friendly printing techniques, helping us reduce waste and avoid over-production.

Our apparel is crafted in factories that follow strict ethical standards.

Awesome Gift for your Pokemon Enthusiast

Purchased for my nephew who's an avid Pokemon fan. Ordered an Adult Small and it's true to size. Quality and stitching is great. Material is breathable and has stretch so it can keep up with his active nature. Print and coloring holds up through multiple washes (He's already worn it several times since his Birthday). Overall happy with my purchase and would highly recommend brand.