Synthetic fatliquor for tight and full leather Synthetic fatliquor for tight and full leather. Suitable applications include shoe upper and bag leather. Bags & leather goods Shoe Upper Synthol PL 565 renders leathers of excellent grain tightness for all substances. An exceptional full and round leather is obtained when Synthol PL 565 is being used. Synthol PL 565 ensures a short and even buffing nap with a good writing effect. TDS request Request a TDS of product TDS Sample request Request a sample of product Request