Magnets are 30 mil & waterproof. Great for cars, fridges or anything really! Each magnet is 3.5 at it’s maximum size. All magnets ship within 1 business day of ordering! (please keep in mind, weekends are not considered business days). All magnets are shipped via letter mail (domestically) & this can take 3-5 business days to reach you. USPS often experiences delays during peak holidays & this time frame is subject to change. Magnets shipped internationally can take 7-21 days, based on where you live. All international packages come with tracking. Connect with us! Tik Tok: @kmpaperco Instagram: @kmpaperco Facebook: @kmpaperco Pinterest: @kmpaperco Rainbow Magnet, Boho Colorful Car Magnet For Fridge, Locker Magnet, Birthday Gift Her, Small