I love Crocs--I own four Cayman-style colors and recently purchased the Mammoth ones when we moved to a colder climate. Then I saw the Woolly Mammoth ones and I just had to get those as well! And they are amazing!

You do need to make sure to order a larger size...I normally wear the M9/W11 and hated to order the M10/W12 (12!) but it was indeed the size I needed!

I haven't yet tried to take out the lining for washing, but it seems that there might be another hook or latch holding the lining in (unlike the regular Mammoth crocs), because I can pull these off without pulling out the lining--a definite plus for me.

I also like the extra traction and the fewer number of holes, since these are basically my winter shoes since I hate to buy boots (we don't get THAT much snow where we live).

I highly recommend these if you are a Crocs fan.