This product features a single wall construction with a snap-on, spill-resistant thumb-slide lid, is BPA free, and meets FDA requirements. It is available in Black or Silver and is recommended for hand washing. Imprinting options include standard silk-screen colors or 4-color process imprint, with optional laser engraving that engraves silver. The approximate size is 4 ?" H, and it is packaged in a poly bag.