Which up side of the PVC yoga mat

Update:12 Mar 2018
Summary:

1, The two sides have anti-skid points: PVC yoga mat is […]

1, The two sides have anti-skid points: PVC yoga mat is a homogeneous material, so it can be made double sided, if there are evenly distributed anti slip dots on both sides, and both sides of the texture are the same. That electronic is a double-sided yoga mat, which can be used on both sides.
2, Set an antiskid point (or a smooth side antiskid point) on one side (or a smooth side): the antiskid point is the front (upward side).

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