Lakeland ActiveWomen's Lorton Fleece Lined Garden Clogs

my size is a 7 and a half, (uk). Should I try a 7 or an 8 ?

Is fleece lining available for purchase additionally? I used clogs for about 10 months, and fleece lining is worn out now.

Can the fleece lining be washed?

What is the weight of one clog please ?