1.Travel mug is made of 304 stainless steel and PS plastic

2.Double wall insulated umbler with a spill proof plastic lid

3.Hand wash only; cannot be used in the microwave

4.16 oz mug is BPA, lead, phthalate-free

This mug is practically fit for travel. Thermos holds 16 oz., is totally insulated, and has an easy slide top. This coffee thermos should only be hand washed and cannot be used in the microwave. Great to use as a travel coffee mug, tea mug, plastic tumbler, and water cup.