Jefferies research expects Deckers Outdoor (NASDAQ: DECK) to beat EPS estimates when they report on earnings this Thursday, but they are planning to take a close look at the earning composition.

The biggest question mark in Deckers' product lineup is the "UGG" brand. After ten years as a top seller, questions are beginning to rise about the brands lifespan. Will it remain a staple brand or simply go out of fashion?

Jefferies analysts seem to think it will last, and they have a BUY rating on the stock, with a $120 price target. DECK was trading at $66.52 late Tuesday, down 2.75%.