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Kenpo Grandpa:

Are you a Kenpo grandpa that supports your grandchild’s journey in the martial arts?


Show your support for you grandkids as they go from white belt to black belt with this stylish shirt.


Muscle Shirt Information:

This soft, sleeveless tank is so comfy you're going to want to wear it everywhere, be it on your couch, out on a walk, or during a yoga class. The relaxed fit and low-cut armholes gives it a casual, urban look.

• 100% airlume combed ring-spun cotton
• Fabric weight: 4.2 oz/y² (142 g/m²)
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes

I'm A Kenpo Grandpa: Muscle Shirt

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