Builders gloves are much cheaper than anything branded for "leisure". I've had these for about three years, worn regularly as bike commute gloves and for outside work: https://www.selcobw.com/maxidry-thermal-gloves-size-10 I've never bought any but (proper) builders shops sell a range of thermal gloves, some on the Selco page above are sold as good for -30 degrees! For less than a tenner. I think that some of the USA long distnce walkers have cottoned on to builders' gloves. Not seen them much over here. I have some waterproof overmitts but I always struggle getting the second one tucked into my sleeve to stop water running down inside them.