Material added to the bottom of the topcover, just distal to the front of the orthosis. Used to provide additional cushion, control or accommodation.

Partial Glue: ProLab offers the option of gluing the topcover in the heel only or posterior half only. This option allows accommodations or modifications to be added later in the

Denotes the distal length of the topcover. The following lengths are available at ProLab: To Mets: Cover ends at distal end of orthotic plate To Sulcus: Cover extends under the

Material added to the bottom of the orthotic shell to finish the orthosis and protect it from wear. Common materials are vinyl, leather, suede, and firm EVA.

A layer of Poron can be glued to the bottom of any of the covers listed above for additional cushion. Available in 1.5mm or 3mm. Poron is an open-cell foam

Description: Three-layer material with leather top, P-cell middle layer and Poron bottom layer Advantages: Leather is low friction and absorbs moisture, P-cell compresses to accommodate prominences. Poron offers cushion Disadvantages:

Description: A two-layer 3mm topcover with a bottom layer of high-rebound EVA and top layer of synthetic suede Advantages: Top layer has low coefficient of friction, resistant to tearing, good cushion,

Description: A composite material with a closed-cell neoprene bottom layer glued to a nylon top layer Advantages: Excellent cushion, cushion does not tend to compress much over time, nylon top

Description: Synthetic leather-type material Advantages: Very tough, long-lasting, extremely thin, resistant to tearing, does not absorb moisture, minimal friction, excellent topcover in combination with other cushioning layers Disadvantages: No cushion

Description: Closed-foam single layer material. (70 durometer) Advantages: Long-lasting, resistant to tearing, very rigid so it slides into shoes very easily, works well as a heel lift, aperture or when