Although they are large enough for a 650 mAh rechargeable battery and an e-liquid capacity of 13 ml, they are not bulky. You can easily take them anywhere. In addition, the Elf Bar 5000 is made of PCTG plastic with a matte body and a shiny mouthpiece. I'm a fan of how they look.
They have a soft-touch body with a mouthpiece and a shiny plastic base. The soft-touch part has a combination of colors with a 2-color attenuation that dictates the flavor of the interior. For example, the strawberry and kiwi flavor goes from pink to green. If the color isn't enough to differentiate them (sometimes it isn't), the flavor is also printed on the front, along with a large, prominent ELFBAR bar.
Both are made of food-grade materials, including PCTG plastic. It's tough and tough, meaning you don't have to worry about it being easily damaged. As the Lost Mary OS5000 is a newer model, Elf Bar has adopted the attitude of “if it's not broken, don't fix it”. PCTG plastic is an excellent material for vaping products.
The Elfbar BC3500 and the BC5000 look almost the same, the only difference is that the BC5000 is 10 mm higher.