Adult Sefardic Wool Off White T-Shirt Comes Without Tzitzit - Tying Options Available
The default tying method is no tzitzit, you can change this to tying with thin, thick white handmade tzitzit and/or add techelet.

Manufactured according to Halacha, with slits on the sides which can be closed with snaps. Made of 100% wool, it comes with small laundry pockets to put the Tzitzit in during the machine wash.

The Kosher Certification is from HaRav Machpud Shlit"a.