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: 4x2, 2x2, 1.67" Circle, 2.5" Circle (1x2.625 or .5x1.75 will also work, but are very small compared to size of container)