In some luxury American wooden coffins, the lining may be made of high-end silk or velvet fabric. These fabrics not only have a delicate texture and soft luster, but also have good insulation performance, creating a luxurious and comfortable resting environment for the deceased.  

To increase the comfort of the lining, a certain thickness of sponge is usually filled between the fabric and the bed board. The density and elasticity of sponge will be selected according to different needs, ensuring sufficient softness and a certain degree of support, so that the deceased's body can receive good support.  

The memory compartment is usually set on the side wall or head position inside the coffin, using a special compartment design that is closely connected to the coffin body but relatively independent. The opening of the interlayer is usually designed to be relatively concealed, which does not affect the overall appearance of the coffin and is convenient for placing and retrieving items.  

Adjustable cushions are usually installed at the head position of coffins, achieving angle adjustment through mechanical structures or pneumatic devices. Users can easily adjust the angle of the cushion according to the deceased's physical condition and personal preferences, allowing the deceased to rest in the most comfortable position.  

The interior carving patterns of American wooden coffins are rich and diverse, commonly including religious symbols, floral patterns, and animal patterns with auspicious meanings. These carved patterns not only have decorative value, but also contain profound cultural and religious significance, expressing blessings for the deceased and expectations for the afterlife.  

Internal carving is usually done by hand, and craftsmen rely on their exquisite skills and rich experience to carve each pattern vividly and delicately. Hand carving endows coffins with unique artistic value, making each American wooden coffin a one-of-a-kind work of art.