Computer based systems and methods allow collaborative shopping for and/or designing of (e.g., customization) consumer products, such as articles of footwear, apparel, athletic equipment, etc., by plural users using different computing devices. The users' computing devices may be in communication with one another in various manners, such as over networked connections (e.g., a local area network (LAN), a wide area network (WAN), an internet connection, etc.); via peer-to-peer communications; through a common server or combination of servers that establish a communications link; etc.). The various parties may participate in an on-line or other computer communicative session to create and buy customized products. Additionally, user interfaces for providing these collaborative sessions are described.