From “Rocker Guide – What is “Rocker” and why does it matter?” from evo.com: What is Rocker? There are three ingredients ski / snowboard shape: Camber – Camber is the traditional shape for skis and snowboards. Camber is a slight arching upward curve with the bend or curve upward in the middle. A good example of camber is the Burton Custom Snowboard. Camber provides excellent turn initiation and handling on on-piste slopes. From “Rocker Guide – What is “Rocker” and why does it matter?” from evo.com: What is Rocker? There are three ingredients ski / snowboard shape: Camber – Camber is the traditional shape for skis and snowboards. Camber is a slight arching upward curve with the bend or curve upward in the middle. A good example of camber is the Burton Custom Snowboard. Camber provides excellent turn initiation and handling on on-piste slopes. 
Rocker – Rocker (also called reverse-camber) is just as it sounds – camber turned upside down. This term is borrowed from watersports where rocker is common. A good example of a ski that has Rocker in the tip and tail is the Volkl Gotama Skis. Rocker skis and snowboards offer superior float in the powder and are now used all over the mountain. Rocker is no longer just for powder. 
Flat – Flat is often found between the tip and the tail of the ski/snowboard. It is horizontally level or even. The base is flat like a pancake. Completely flat technology can be found in the K2 Zero Snowboard. 
These three properties: camber, rocker, and flat are combined in a variety of ways to create an array of choices for both skiers and snowboarders.… Read whole article here …
Rocker – Rocker (also called reverse-camber) is just as it sounds – camber turned upside down. This term is borrowed from watersports where rocker is common. A good example of a ski that has Rocker in the tip and tail is the Volkl Gotama Skis. Rocker skis and snowboards offer superior float in the powder and are now used all over the mountain. Rocker is no longer just for powder. Flat – Flat is often found between the tip and the tail of the ski/snowboard. It is horizontally level or even. The base is flat like a pancake. Completely flat technology can be found in the K2 Zero Snowboard. These three properties: camber, rocker, and flat are combined in a variety of ways to create an array of choices for both skiers and snowboarders.… Read whole article here …