Ray-Ban RX5228 - Seth Rogen - Neighbors
The pair worn in the films has a brown opal gradient frame, color code 5034, this is exactly the same model of eyeglasses worn by Greg Kinnear in the movie Stuck in Love. These glasses are available on FramesDirect, Amazon.com, Amazon.co.uk, eBay.
The RX5228 glasses come in different sizes, colors and prescription lenses, so if you are ordering a pair make sure to customize them to your needs.
Reference: Ray-Ban RX5228, brown opal gradient, color code 5034