RadmireBraided Canvas Woven Elastic Stretch Belts for Men/Women/Junior with Multicolored (White, Large/36"-38” Waist)

What is the buckle section made out of? Leather or synthetic?

I wear a size 36 jeans. is large ok. i have the same belt in black and it's xl and too big. i have to tuck it in. thoughts?

I wear a 40" pants and 46" leather belt. Should I order the 44" or the 48"?

My boyfriend wears pant size 34x34. Should I order the medium (32-34") or the large (36-38")? Thank you in advance!