Like all Assos Series tights, the RX – LL features an anatomical cut and is tailored to perfectly adhere to your anatomy in motion without restricting any of your movements. Seams are placed where they don’t bother. Pattern insert behind the knee which eliminates the vertical overlook seam, resulting in a “no – seam” behind the knee area. Anatomically correct, perfect fit. The RX – LL tight is the “lightest” Assos tight and is ideally suited for cold but not extreme weather conditions. The RX – LL does not feature an incorporated insert. Hence, you always use a pair of Assos cycling shorts underneath when you are on the bike. The advantage is that you get another insulating layer around your body ( the shorts ) and that you can use the tights on consecutive days without having to wash them if time does not allow it. Without the insert, your Assos RX – LL tight becomes even more versatile and the perfect insulating layer for other winter outdoor sports activities. Wear them underneath other tights or pants (skiing, snowboarding, motorbiking etc.), you will be amazed!