World's Greatest Dad Penguin Black Cap World's Greatest Dad penguin, an original penguin design by JGoode. World's Greatest Dad T-shirts and gifts for penguin lovers. Product InformationTop it off in our structured black cap made of sturdy, durable brushed canvas. 100% cotton breathes for year-round comfort. Adjustable closure with a low profile crown. Images are permanently adhered with a sturdy patch. Look cool on bad hair days or when shading your eyes from the sun. One size fits most. - Adjusts from 20" to 24"
- Crown measures 3 ¼"
- Structured 100% brushed cotton canvas
- Permanently adhered polyester patch
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