Red THERMOS brand insulated/refrigerated water bottle, stainless steel interior. - Brand: THERMOS - Color: Red - Function: Keeps hot/cold - Interior Material: Stainless steel Thank you for viewing. I used this for outdoor club activities for about six months, so there are many scratches and stains. The interior is clean. When listing, I washed the packing with chlorine bleach, but other parts cannot use oxygen-based or chlorine-based cleaners, so I only washed them with kitchen detergent. The packing and the cap unit including the drinking spout (part in photo ④) can be purchased separately. If you are concerned about hygiene, you can replace those parts on the official website, etc. Please consider this if you are satisfied with the photos.