9902.17.91 - Athletic mouth guards of plastics (provided for in subheading 9506.99.60)

This HTS category, 9902.17.91, specifically covers athletic mouth guards manufactured from plastics. These are protective devices designed for use in sports to prevent dental injuries. The classification explicitly notes that such mouth guards are provided for within subheading 9506.99.60, indicating their primary classification under sporting goods. This temporary provision likely exists to address specific trade policy considerations or temporary modifications related to these particular items.

Distinguishing this category from its siblings within Chapter 99 is crucial. Chapter 99 itself deals with temporary legislation and special provisions, which differ from the permanent structure of the Harmonized Tariff Schedule found in Chapters 1 through 98. While sibling categories might represent other temporary measures or restrictions on different goods, 9902.17.91 is narrowly focused on plastic athletic mouth guards. It does not encompass other sporting equipment or general plastic articles, even if those might fall under a different section of the main HTS.

As this is a leaf node, there are no further subcategories. The classification is specific and complete within its designated HTS code. Therefore, the focus for classification purposes is on confirming that the imported item is indeed an athletic mouth guard made of plastic, as described, and ensuring compliance with any associated temporary legislation or trade agreement provisions referenced by its placement in Chapter 99.