So got a new device, the ring is larger than I had before but when I wear it, my sac starts turning darker in colour. What could be the cause? Too much weight pulling down?
Not unless the ring is made from the remnants of a super nova. If you can place a finger under the ring then it's not too tight and the weight is certainly not the problem.
Slight discoloration is common, especially when u are first locked and you are constantly attempting an erection. I find I can see the veins in my sack a lot more now, when all horned up it’s a spider web of blue lines. Then a slight purplish hue with a tight sack. If the color isn’t too drastic and the temperature isn’t cold, you will be ok.
I have that issue when sleeping. if this happens when you are not erect then you may need to bump it up to 50mm for ring size. also the round rings dig more into the main vein in the penis vs the flat rings that the CB uses. the surface area digging in on the round steel ring resembles a tourniquet vs the 1/3" wide flat surface of the CB. this is why nicer steel devices have flat rings that are wider. or so i am told. Im upgrading to a lori 2A soon and will have a steel device that has a flat steel ring like i described. i will also go back to 50mm vs the 45mm im in now. the device is perfect other than night time i grow so much that it cuts off a lot of blood supply when i have a mega erection in my sleep. this does not go away as the ring keeps blood from flowing back and it gets painful. i have to get up and walk around to get the erection to go away, only for it to return 30-60 min later. as for your case, if that is turning purple with non erection state, you should consider a larger ring or larger gap. or a flat ring to allow easier blood flow