SL has just done a feature on fluffy jumpers and I have recently bought [this one from M&S. (Cosy Textured Crew Neck Sweatshirt | M&S Collection | M&S)
It is quite generous with long sleeves, so I could get in the size S, but opted for the M for a slouchy look and to be able to wear a cotton polo neck underneath in the winter. The red is gorgeous. I bought the ‘mole’ which is a lovely taupe, to wear with winter white cords.
M&S also have this V-neck version in orange or cream.
Today I saw this cardigan in Sainsburys. They say it is grey, but in reality it is a useful denim blue shade.
The Tu website also has these fluffy jumpers in burgundy and hot pink.