The search results provide information on double edge razors, but not specifically on a product called "double edge barberproduct." However, based on the information available, we can provide some general details on double edge razors, including their positive and negative aspects, and the materials used in some of the products.

Positive aspects of double edge razors:

• They can provide a closer shave than disposable razors.
• They can save money in the long run, as they are reusable and replacement blades are often less expensive than disposable razors.
• They can be more environmentally friendly than disposable razors, as they produce less waste.

Negative aspects of double edge razors:

• They can have a steeper learning curve than disposable razors, as they require more skill and technique to use effectively.
• They can be more time-consuming to use than disposable razors, as they require more preparation and care.

Materials used in some double edge razor products:

• The Anself Safety Razor is made of stainless steel.
• The Bevel Razor System includes a pure-grade badger shaving brush, a bottle of "priming oil," a tube of shave cream, a bottle of aftershave, and a pack of unbranded double-edge blades that are "German engineered."
• The Derby Extra Double Edge Razor Blades are made of chromium-ceramic, platinum, tungsten, and polymer.
• The Fendrihan Double Edge Safety Razor has a barber pole handle and is made of stainless steel.
• The King C. Gillette Double Edge Safety Razor is designed for edging sideburns and strong beard lines and has a closed comb design for greater control.

In summary, double edge razors can provide a closer shave and be more cost-effective and environmentally friendly than disposable razors, but they can also have a steeper learning curve and be more time-consuming to use. The materials used in double edge razor products can vary, but some common materials include stainless steel, badger hair, and various metals and polymers.