Blue String Tzitzit
"Speak to the Children of Israel and bid them that they make fringes on the corners of their garments throughout their generations, and that they put upon the fringe of each corner a thread of blue (tekhelet). And it shall be for you as a fringe, that you may look upon it and remember all the commandments of G-d, and do them..." (Numbers 15:38-39)
The essence of this part of the mitzvah, the biblical blue dye, was lost until very recent times. Other sites discuss the recovery of this mitzvah. Here, we'll try to explain the options, and what we offer.
Tzitzis, the fringes on the 4 cornered personal garment (a tallit katan) and on the large 4 cornered prayer shawl (the tallit gadol or just the tallis) have been only white. Now, you can buy these garments with blue string - techeles - tzitzis. The garments come in several types, as do the strings. To avoid confusion of presenting you with a huge combination of possible options, we've selected what we believe to be the most common styles. Below is what we currently stock, others can be obtain by special request:
The Blue Dye
Radzyner - Declared by the Radzyner Rebbe to be rediscovered techeles in 1888, from the cuttlefish.
Murex - Declared by Rabbi Eliyahu Tavger to be rediscovered techeles in 1985, from the Murex snail.
The Tallit Katan Garment Types
Cotton - Traditional Lightweight Material - small to extra-large
Wool - Traditional Medium Weight Material - small to extra-large
The Techelet Blue Tzitzit String Types
Thin String - Hand Woven - more comfortable for inside the pants wear but wears quickly.
Thick String - Hand Woven - longer, more durable, l'shem hamitzvah, clearly shows the mitzvah, strong.
Style of Tzitzit Tie
Techeles tzitzit are generally tied differently than white tzitzit. We've selected what we believe is the most common among techeles tying styles, others are available by special request...
Radzyn (identical to Chabad white method) - The blue string is the primary twister, with humps.
Ari'Zal - The blue string has white hump spacers between the knots.