Woven necktie design based on M.C. Escher's artwork features tessellated fish swimming up and down river simultaneously.
Silk. Navy Blue

Price: $19.

Get Radical Baseball Cap embroidered with Get Radical stylized square root logo. High quality adjustable cotton cap with nylon mesh lining. One size fits all.
Available in Black, Maroon, Spruce Green.

Price: $20.

SALE! Black Get Radical baseball caps are on sale for $15.

Know Math Baseball Cap embroidered with Get Radical stylized square root logo. High quality adjustable cotton cap with nylon mesh lining. One size fits all.
Available in Black, Spruce Green. Maroon is currently out of stock.

Price: $20.

SALE! Black Know Math baseball caps are on sale for $15.

1 1/8" (28 mm) wide by 13/16" (20 mm) high.

Price: $2.50.

1" (25 mm) wide by 1" (25 mm) high.

Price: $2.50.