Knockout, which is part of a line of Nike training gear, featuring Therma-FIT technology for warmth.

Here is a summary of the characteristics 

100% Polyester

Key Characteristics 

• KO (Knockout) Series: These pants are part of Nike's training and workout apparel.

• Material/Technology: They feature Nike Therma-FIT fabric, which is designed to hold in body heat for warmth without adding excessive weight, making them suitable for cold-weather training or warm-ups.

• Fit: They are designed as a training pant with a focus on ease of movement.

• Features: They include side pockets, an elastic waistband with a drawcord.

• Estimated Inseam LengthSmall (S) 30.0 - 30.5 inches Medium (M) 30.5 - 31.0 inchesLarge (L) 31.0 - 31.5 inches