SYLPHIDAnkle Deck Boots for Men Waterproof Rain Shoes Neoprene Rubber Footwear for Gardening Fishing Hunting and Camping

Do they run true to size, or do they run small like many other boots?

How do these feel in the toe box? my feet aren't super wide but i do like a little wiggle room. also i wear a size 10 in mens.

How heavy is each boot?

If i wear a US men's 8.5, should i get size 8 or 9?