The Sigrid 16oz RPP w/ Stainless Steel Mug features a recycled PP liner, lid and handle, plus a stainless steel outer wall. The spill-resistant, press-on lid with slide closure makes this modern mug perfect for enjoying your favorite beverages on the go. Recommend to hand wash only. Through a partnership with 1% For The Planet, one percent of sales of all EcoSmart® products are donated to environmental nonprofits.