Is Visa on arrival a sticker visa??

Dear sir, 

Thanks for your question, 

we would like to inform that you need a visa to enter Vietnam, 

Please kindly apply first to get approval letter , after that using the letter to get visa stciker and visa stamp at the aiport

Here the link : https://www.vietnam-evisa.org/apply-visa.html

Thanks and best regards, 

Camelia