Simplify the following text for a Grade 8 native English-speaking person.
Original: The winter fur is long ( being 40 â `` 50 mm long on the lower back ) , and consists of sparse , coarse , bristle-like hairs lacking underfur .
Simplified: The winter fur is long ( being 40 â `` 50 mm long on the lower back ) , and is made up of of some coarse , bristle-like hairs lacking underfur .