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Keeps them from absorbing water so you are not stuck with permanent stains like scotchguard.
any matter that is water repelant such as grease or silicone & oil based paint
Yes leather is porous and water (moisture) is good for leather and is what keeps it in good condition. Leather has to 'breathe'. This means that the leather naturally transpires which allows the movement of moisture back and forth through the leather. All finshes and finishing processes that are used (including repair processes) have to use specific products that allow this movement of moisture to take place.
The best way to care for cow leather shoes is to use a soft, dry cloth to get all of the dust off of the shoe. Use soapy water and clean off the shoe before finishing with a leather shoe polish. Wipe the shoe off and allow it to air dry.
emulsion wax a liquid mixture with oily or resinous particles in suspension
All leather must allow the movement of moisture back and forth (transpiration) otherwise it is not leather. The degree of absorbency will be affected by the amount and type of finishing products that have been used on the leather during the retanning process. Moisture is crucial to keeping leather in good condition and water based products are good for keeping the balance correct. Aniline style leathers are more absorbent than Pigment Coated Leather but all leather finishes still have to allow moisture to get to the leather and are designed to allow this to happen. Absorbency can be tested by putting a few drops of water onto the surface of the leather. If the water soaks in and leaves a dark mark it is likely to be an aniline style leather, if it beads on the surface the leather has some type of finish on the surface. The rate of absorbency is a good indicator to technicians of the type of leather they are dealing with and is one of the 5 step process that is used during leather identification.
Oil on leather can occur during fat-liquoring process in the wet-end. This process imparts oil into the leather fibres in order to impart particular softeness or "oily" touch required by the tanner. During the dry-end or finishing process, mineral oil can be imparted onto the leather crust through spray process or generally, roller-coating process. The reason is generally for fashion or water-resistant requirement.
Wash the leather football with warm soapy water. Dry with a cloth. Then rub well in with a leather preservative to prevent the leather from hardening or absorbing water- use dubbin or saddle-soap.
Some leather is waterproof if heavily polished.
try to vacuum out the water remaining. carefully Remove the leather by either unzipping or carefully cutting the leather. replace or steam clean the inside padding then replace the leather.
You can shrink leather by putting it in boiling water for about 10... leather gloves stretch a lot
PU leather is water resistant