Pre installed tape and round sticker enable 3 minutes installation Suitable for bay window, octagonal window and other irregular space Includes portable storage bag for travel convenience Craft of silver coated polyester for complete blackouts effect Features with included fabric cutter and measuring tool, adaptable to window Modern minimalists styles Silver coating reflects sunlight to insulate against heat, maintaining room temperature while protecting privacy in both home and offices environment Provide light blocking with 30% better shading than regular curtains Ideal for night workers and nurseries requiring total dark Tape installation requires without drilling or tool Easy to clean with damp cloth Portable design (60% than traditional curtains) makes it portable for frequent movers like international students or road Sturdy materials ensures long time use