Japanese Rust Eraser Block #320 (Sabitoru MS-47)

T-Shirts

• Wash inside-out in cold water to keep colors bright and prints intact.

• Use a mild detergent—no bleach or harsh chemicals.

• Select a gentle cycle; rough spins weaken fibers.

• Air-dry flat or hang to dry; avoid tumble drying to prevent shrinkage and fading.

• If ironing is needed, do so inside-out on low heat, especially over prints.

• Fold for storage rather than hanging long-term to avoid shoulder bumps.

Mugs

• Hand-wash only; dishwashers and strong detergents can dull decals and finishes.

• Clean with a soft sponge or cloth—avoid abrasive scrubbers that cause micro-scratches.

• If microwave safe, use with care—watch out for superheated liquids and metallic accents.

• Let mugs cool before washing to prevent thermal shock (cracks and crazing).

• Dry thoroughly—trapped moisture around rims and handles fosters mildew.

• Store upright or individually on saucers to protect rims from chipping.

• Knives: 3–5 business days
• Shirts, mugs, and other gear: 5–7 business days
  Because good things (and grumpiness) take time.
• We offer 30-day free returns, no questions asked.
  Just cover the return shipping, and we’ll handle the rest.
• Currently, we ship to the USA only. Working on global domination… one grumpy dad at a time.

• All major cards, PayPal, Apple Pay, and the occasional dad joke—though Visa processes faster.
• Safer than the secret chocolate stash you think your kids haven’t found. 256-bit SSL + PCI-compliant checkout.
• 30-day money-back guarantee, no-questions-asked. (Well, maybe one sarcastic question, but we’ll refund anyway.)