Rab womens merino 160 long sleeve crew the womens merino tm 160 long sleeve crew has been designed using a unique fusion of natural merino and synthetic fibres with 375 tm technology the super fine merino wool offers softness breathability and odour control complimented by the durability of the synthetic fibres and the fast dry times from 375 this intimate blend offers unsurpassed next to the skin performance a mid weight workhorse for multi day use in cooler conditions the meri