Question:
If one tzitzis strings hang straight down instead of being on the corner, does one still comply with the mitzvah?
If one’s tallis katan is folded, is it considered to be less than the shiur, or does one still comply with the mitzvah?
Answer:
Lechatchilah the tzitzis strings should hang side ways but if they hang straight down the mitzvah is still performed. If the tallis katan is folded still considered to have the correct shiur (Chabad are muchmir).
Sources:
O:CH 12:15 & Mishnah Berurah 73. O:CH 16 Mishnah Berurah 4 Chazon Ish 2:35, Siddur Harav, Tehilah Ledovid 16:2.