Thc Vape pens, weed pens, and hash oil pens are all terms for a type of vaporizer designed specifically to vaporize cannabis distillates and oils.

A reusable vape pen consists of a battery and a cartridge. Reusable vape pens are really half-reusable since you use the same battery with multiple cartridges but throw away the empty cartridge once you've vaporized all the oil inside. 

Disposable or all-in-one vape pens contain all the same elements of semi-reusable weed pens, but they're sealed up in one sleek, single-use package.

Funjuice is distributing many premium quality THC products such as Thc Vape Carts and Thc Pods from Usa...

Pros

Extremely easy to use
Highly portable
Least expensive option to try
Cons

Partly or entirely disposable = wasteful  
Can only be used with distillate or oil cartridges
Less flexibility in terms of strain and concentrate selection 
Can get expensive if you vape regularly

Link THC pod: https://funjuice.vn/thc-disposable-pod