What size should my artwork for the pet bottle be?
For the 1 L size, the print-ready layout is 3157 × 1134 px at 300 dpi (267.3 × 96 mm with bleed). Upload one picture for the whole layout or one for each side; the editor shows each side's size.
Which materials can I preview the pet bottle in?
Glossy plastic, Matte plastic. Switch between them on this page and in the 3D editor; your artwork and the print PDF stay the same.