Standard Rex

The Rex is a popular breed bringing together the best of both worlds - commercial and fancy and as such is a popular choice for many backyard rabbit enthusiasts. Having a maximum weight allowance of 9.5 lbs (bucks) and 10.5 lbs (does), Rex are classed as commercial-type rabbits, with their meat producing qualities, but are in the 1/3 of commercial breeds classified as a four-class breed (Junior bucks & does and Senior bucks & does).
 

The crowning glory of the "King of Rabbits" is its unique fur structure which is the hallmark of the breed. Compared to "normal furred" rabbits, the Rex coat is short and plush - standing upright with the guard hairs nearly the same length as the undercoat. Rex first made their way to the United States around 1924 from France and were the result of a genetic mutation that appeared in two individual rabbits in a herd located in the Coulonge commune in Northwestern France. Breeders in this country have come a long way since then, in improving the type and fur of the original imported animals. 

There are 16 different varieties/groups accepted in Rex in the United States today: Amber, Black, Blue, Broken Pattern, Californian, Castor, Chinchilla, Chocolate, Lilac, Lynx, Opal, Otter Group, Red, Sable, Seal, and White. As well as over a hundred unrecognized varieties. Rex are in the top three of commercial breeds shown in the United States. 

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Source: http://nationalrexrc.org/