New smaller size! 30 g is about 1 oz. Filling with a solution that is too hot can warp the plastic & damage the mechanisms. Containers are not “water tight”, so pouring too hot can also cause leaking (until the formulation solidifies). Compatibility testing is always recommended. Set includes natural round twist-up tube w/screw-on cap. 2 oz (57g) capacity Polypropylene. #5 Recyclable BPA Free (Product is not manufactured with BPA, BPS, DEHP, DBP, BBP, DINP, DIDP, DNOP, PFOA, PFOS, PVC, HIPS Mercury or Lead) HEIGHT W/OUT CAP: 3.25″ HEIGHT W/CAP: 4.25″ DIAMETER: 1.25″ LABEL AREA AROUND CONTAINER: 4.5″ LABEL AREA HEIGHT: 2.5″ COMPATIBLE LABEL SIZES: 4×2, 2×2, 1.67″ Circle, 2.5″ Circle (1×2.625 or .5×1.75 will also work, but are very small compared to size of container)TOP-FILL – Easy to use and perfect for almost any DIY cosmetic use. Twist-up Design, easier to use than push-up, creates beautiful PROFESSIONAL looking product. REUSABLE, RECYCLABLE PLASTIC – Made of #5 recyclable polypropylene plastic. BPA FREE – Perfect for at home and health conscious users. NEW SMALLER SIZE – Adorable 1 oz. size (30g) – Travel Friendly.