The chapter deals with the private international law aspects of the Commission's Proposal for a Regulation on a Common European Sales Law (CESL) and more precisely how the proposed regime fits into and interplays with the choice of law rules found in the Rome I Regulation on the law applicable to contractual obligations and the 1955 Hague Convention on the law applicable to international sales of goods. It also compares the proposed CESL with the uniform regime in the 1980 United Nations Convention on Contracts for the International Sale of Goods.