"Powered by Condensation Nuclei"
Sure, it's a bit geeky - making a design about the particles that water condenses around to form clouds. It may confuse some people, but you'll get a good laugh from those who 'get it'.

For more details, click the "View Larger Image" link below.

click to view front / back: View Larger Color:

Condensation Nuclei Jr. Jersey T-Shirt Powered By Condensation Nuclei (you know, the particles around which water condenses and thereby forms clouds!) A bit geeky sure, but so what. (poweredbytshirts.com) $23.99 Size:  Size Chart Small Medium Large X-Large Color: White Light Blue Light Pink Qty:    AVAILABILITY: Product Number: 29869944 Tell a friend about this product! Product Information Fit: Fitted Body-hugging close contoured fit. Size up for a looser fit. Fabric Thickness: Turn heads in this hot, hip, curve-hugging tee. Made of ultra-fine, ring-spun cotton, it gets softer with each washing. Lightweight for summer comfort or winter layering, it's a casual, effortless way to ensure you're stylin' in comfort. 4.3 oz. 100% ultra-fine combed ringspun jersey Side seamed for the perfect fit Size up for a looser fit