There are two types of Vietnam 5-year visa exemption certificate including loose leaf (detached certificate) and the type issued in the passport.

According to Clause 3 and 4, Article 4 Decree No. 82/2015/ND-CP Visa exemption for Vietnamese people residing overseas and foreigners who are spouses, children of Vietnamese people residing overseas or of Vietnamese citizens

3. The certificate of visa exemption is issued in the passport. A detached certificate shall be issued if:

a) All pages of the passport for granting visa are used;

b) The passport is issued in a country who has not established a diplomatic relation with Vietnam;

c) Another international travel document is used instead of a passport;

d) A detached certificate is requested by the applicant;

dd) A detached certificate is needed for diplomacy, national defense and security purposes.

4. Each person shall be granted a separate certificate of visa exemption. Any parent and children who share the same passport shall be granted a single certificate of visa exemption.