【420D Oxford fabric design】- The blackout roller blind consists of two parts: the front is made of 420D Oxford fabric and the back is covered with a silver coating. The material of the blackout roller blind provides 100% blackout to protect the room from sunlight, block UV rays and keep the room warm in winter and cool in summer. The Oxford fabric is also water-repellent, so the blackout roller blinds do not get wet easily. 100% blackout roller blind: Create blackout roller blinds without drilling and enjoy uninterrupted peace and quiet with our three-layer blackout roller blinds for window mounting. With thick polyester fabric and a reflective silver coating, they block all light while insulating against heat and drafts – creating a cool, cozy space, perfect for bedrooms, nurseries or home offices. 【Freely cuttable shapes】- Measuring 200 x 145 cm, this temporary blackout fabric can be cut to fit any window size or shape. From classic Victorian bay windows to modern patio doors, they offer a custom fit that suits both standard and non-standard designs – perfect for any home or workplace. No holes required and easy to install: Our blackout roller blinds come with 12 sSLong nano tapes that leave no residue after removal. There are also 18 circular adhesive sSLips for flexibility and stability. Without drilling or special tools, you can easily attach and remove the roller blinds to adjust to the desired light intensity at any time. Lightweight and portable: Blackout roller blinds are lightweight and portable, perfect for travel or temporary accommodation. Our portable blackout curtains come with a travel bag, which offers great convenience for families, travelers and tenants. The compact, foldable design is easy to pack, store, carry and transport.