DURA POCKET Size L Holster for Castles Technology S1F4 PRO
The Castles Technology S1F4 PRO is the PRO edition of the Castles Technology S1F4 Android smart POS with a built-in receipt printer. When it is used all day by cashiers and delivery drivers, it needs a safe place between tasks. The DURA POCKET Size L holster keeps the Castles Technology S1F4 PRO on the hip, protected and ready, so nobody has to put it down on a counter or slip it into a pocket.
Size and fit for the Castles Technology S1F4 PRO
We matched the Castles Technology S1F4 PRO to DURA POCKET Size L because its internal space – up to 210 x 85 x 60 mm – holds this payment terminal firmly without squeezing it. A holster that is too big lets the device bounce while you walk; one that is too small slows you down every time you reach for it.
Designed for everyday work
The DURA POCKET design combines a Velcro closure – which you can hide if you want an open holster – with an extra pocket for a smartphone or notepad and a dedicated pen pocket. Everything a worker needs next to the Castles Technology S1F4 PRO is carried in one place. The holster ships with a hip belt and is also compatible with an optional shoulder strap (OEM_ACC_6247) for a different way of carrying.
Materials and warranty
The holster is made of original Cordura® (300 g/m²), the same military-grade fabric used in tactical vests and backpacks. It withstands more than 50,000 abrasion cycles and reaches the highest water repellency grade in the spray test, yet the holster itself weighs only 75 grams (115 g with the belt). Every Duratis holster is made in Europe and covered by a 5-year warranty that includes tearing.
Made for real work
Think of taking payments on the shop floor and in queue-busting, or selling tickets and drinks at festivals, stadiums and events. These are the jobs where a Castles Technology S1F4 PRO is picked up and put away constantly, and where a dropped payment terminal means downtime and repair costs. On the belt, in a DURA POCKET Size L holster, the Castles Technology S1F4 PRO stays protected and ready while both hands remain free.
For the Castles Technology S1F4 PRO we also offer the open DURA POUCH holster. For bulk orders, logo customisation or a sample for your Castles Technology S1F4 PRO fleet, contact the Duratis team.


