Our cotton and linen only needs to be washed at 30 degrees. We don’t recommend bleach as it can damage fabric.
Do not use fabric softener with your slings - it reduces the life of the fabric and makes it lose grip.
It is recommended to put ring slings inside a pillow cover when washing so the rings don't get damaged.
We do not recommend tumble drying in our washing instructions as it decreases the life of any fabric. Having said that, running it on a low temperature can help soften and ‘break in’ your sling.
It is a good idea to steam iron your cotton and linen slings after washing. Not only does it make them pretty and help to soften the fabric but it avoids the fabric creasing along the same lines repeatedly, which can lead to wear.
Try not to let linen dry completely if you are going to iron – linen is much easier to iron while damp. If you dry linen completely in the tumble dryer it may appear to have drastically shrunk. The fibres have just been compacted together and will return to normal after a quick press with an iron (and a spray of water). Using your sling will also stretch it back out again.
Silk, Wool, Cashmere
We recommend hand washing these fabrics. This can be done by putting some suitable wool/silk/cashmere soap in the bath tub and gently agitating the wrap in it. Then squeeze off any excess water (without wringing), roll in towels and step on them to dry further water. Alternatively you can use the cool handwash setting on your washing machine if it has one. Wool and cashmere should be laid flat to dry. You should avoid drying silk in direct sunlight. They can be ironed on a very cool setting.
**Original Source: http://www.oschaslings.com/essential/care