These are 2 inch diameter circular stickers, intended to be put up at a 45 degree angle as pictured. They are glossy weatherproof vinyl and last outdoors indefinitely. Stickers by themselves are shipped USPS First Class Mail in a padded envelope. Individual stickers are recommended to be added to existing orders, because the minimum shipping cost is $3, though they can still be bought individually if preferred. We are offering packs of stickers for a reduced cost to incentivize others to help us cover Houston in anti-racist stickers!