This is a pair of ergonomic bicycle handlebar grips.
They are designed to provide a comfortable, anti-slip grip for various types of bicycles, including mountain bikes and city bikes. 
The grips are made from materials like soft rubber and are designed to reduce hand fatigue and pain during long rides. 
They often feature a textured surface to enhance control, even in wet or slippery conditions. 
The grips are typically easy to install and are available in various colors and sizes.