Come stavo dicendo

It is unclear who developed the first tigerstripe pattern, consisting of sixty-four (64) stripes. The French used a similar pattern in their war in Vietnam [1], while simultaneously, the British used a similar pattern in Burma [2](Possibly the-then SAS Smock/Denison Smock). After the French left Vietnam, the Republic of Vietnam Marine Corps continued using the pattern, a variant of which was later adopted by Vietnamese Rangers (Biệt Động Quân) and Special Forces (Lực Lượng Đặc Biệt). When the United States began sending advisors to South Vietnam, USMAAG advisors attached to the ARVN were authorized to wear their Vietnamese unit’s combat uniform with US insignia. Soon, many American special operations forces in the Vietnamese theater of operations wore the pattern, despite not always being attached to ARVN units: it became the visible trademark of Green Berets, LRRPs, SEALs and other elite forces.
Tigerstripe was never an official US-issue item. Personnel permitted to wear it at first had their camo fatigues custom-made by local tailors, ARVN uniforms being too small for most Americans; for this reason there were many variations of the basic tigerstripe pattern. From 1969 5th Special Forces Group contracted with Vietnamese producers to make fatigues and other items such as boonie hats using ARVN fabric. During the latter stages of the war, tigerstripe was gradually replaced by the-then-new ERDL[3] pattern, a predecessor of the woodland BDU pattern.

Hypebeast.