Proton Mass Jr. Jersey T-Shirt Does This Proton Make My Mass Look Big?: Quite possibly the geekiest joke ever. You're guaranteed to get groans (and maybe old fruit thrown at you) when you wear this shirt. Product Information 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
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