The best thobe for Jummah is one you can sit, bow and prostrate in without adjusting it. In practice that means four things: a hem that sits 1–2 inches above your ankle bone, enough room across the chest and seat to sit cross-legged through the khutbah, sleeves that push back past the elbow for wudu, and a fabric that does not hold creases from a carpeted floor. White is the traditional choice for Friday. At Men Thobes UK every thobe is £38 and cut to order, any 3 are £85, and delivery is free across the UK in 6–7 working days.

https://menthobes.co.uk/best-thobes-for-jummah-uk/