Jens Pind is a fabulous pattern, but is is also considered an advanced pattern. It has intriguing symmetry that never ceases to amaze me. Parallel series of rings are interwoven three times to make up Jens Pind. If you like the Celtic style, you will like Jens Pind.
If you want a tight weave, use 3.5mm rings. If you prefer a looser weave, use the 4.0mm rings.