Thank you for viewing. These are men's sneakers from Madfoot. They look like they're made of mesh, but it's just the surface and they're not see-through. They can be used year-round. They're made of sturdy material, and the toe and heel areas have firm, solid rubber. They are new with tags and have been stored at home, but they have a yellowish discoloration overall. I think it might be okay if you think of it as the original color... Shipped via Mercari delivery. Simple packaging. Please feel free to ask if you have any questions.