What type of fabric is primarily used in Lululemon's leggings?

Lululemon primarily uses Luon as the fabric for their leggings, which is a blend of nylon and lycra. Luon is well-regarded for its unique properties that cater specifically to athletic wear. The blend provides excellent stretch, allowing for a full range of motion, while also maintaining its shape during various activities. The fabric is designed to wick away moisture, making it suitable for high-intensity workouts and helping to keep the wearer comfortable and dry. Furthermore, Luon has a soft, cotton-like feel, enhancing comfort without compromising performance. This combination of features makes it a preferred choice for those seeking functional and stylish activewear.

Other fabric options like stretch cotton and bamboo fiber do not align with the performance characteristics that Lululemon aims for in their leggings, while polyester fleece is not typically used in their legging line as it is more suited for warmth than for the stretch and breathability required in athletic conditions.