It has a filter layer and a strap to carry

• Made of plastic
• Product Size is 20.8*23cm(8.19″*9.06″)
• Catapity is 32oz
• BPA Free
• Function: Portable
• Custom bottle body print, for custom areas please refer to yoycol mockup generator for details.
• Limited to pratical production, do not place important designs at the seams or within 1.5cm from the bottom of the tumbler. 
• This product is made on demand. No minimums
• Multiple shipping options available, and cost varies on time efficiency.