・ Ergonomic design & 6-level height adjustment ・ Non-slip & excellent stability ・ Excellent heat dissipation & rounded edges ・ Foldable & convenient to carry ・ Exquisite construction & wide range of compatible devices Material: Aluminum Expanded size: 240mm x 165mm x 14mm Storage size: 240mm x 45mm x 18mm Compatible devices: MacBook, iPad, Kindle, tablets, magazines, books, etc. There are no particularly noticeable scratches or stains, but there is some wear and tear. Please understand that this is a used item and consider purchasing it.