This LL.607 tight does not have a chamois and is meant to be worn over a pair of bibs or shorts. The LL in the name stands for leg length or full length, while the 607 refers the weight of the proprietary spandex that Assos uses. The 607 tights are designed and perfectly suited for Spring, Fall & early Winter riding. This would be somewhere in the 40-60 degree range.
For this unique piece the designers at Assos went to the drawing board with a clean slate and started from scratch. Anatomic panels make the garment fit like a glove while cycling. Different materials are stitched together with strategic placement so you have thermal material where you need warmth and elastic material where there is a lot of dynamic action while cycling. Cleverly placed Airblock panel brotects you abdominal area from chill and as Assos puts it reduces discomfort.
See where this garment fits into the synergistic Assos Layering System