SNUG PLUG系列3號塞，直徑3.6cm，比2號只大半cm，多重60g。因為這個階段要慢慢擴不能勉強，到適應了就可以打開新世界。追求大的可以不理，跳到下一號。
整個系列尺寸齊全，由左至右，從小到大，順序排列。
頂部是易於進入圓錐形設計，軀干位置卻是稀有的直身柱體形，如此直徑均一，容易量度，可以準確符合開發中的最佳尺寸，不會強行撐開門戶。頸部只有一厘米粗，不會撐大門口，而且可因應姿勢彎曲，在站立時、坐下時還是行走時減低異物感。
每個型號內建負重，會小幅度郁動。重量是訓練入口的緊緻度和咬合力的必要原素。平常行走時使用會被帶動而在直腸管道中上下滑動。而這種微刺激會令肛門括約肌反射性收縮，就像舉啞鈴一樣有鍛練效果。
Ready to step up your anal game? The Snug Plug 3 will open up a world of possibilities and help you venture into the realms of advanced anal play.
The Snug Plug 3 is perhaps the most versatile butt plug in this series. Great for solo and couples play, it also works brilliantly as an advanced kegel exerciser while providing that sensual feeling of fullness and pressure that anal lovers dig.
Some toys, like the Snug Plug 3, were designed to be worn out in your daily life. With an insertable size of 4.7 inches and two steel balls weighing in at 180 grams, this is the perfect butt plug for public play that's daring and secretive.
Ideal for intermediate users, we highly recommend using the Snug Plug 3 before you try our bigger & heavier Snug Plug 4 or Snug Plug 5.
★ Best Sex Toy for Traveling — Allure
★ Best Beginner Butt Plug — Cosmo Lab of Sexcellence
★ Best Gift to Give Women — NYLON
★ Best Sex Toy to Buy Your Boyfriend — Women's Health
| 1號 | 2號 | 3號 | 4號 | 5號 |
| 直徑： 2.2cm | 3.1cm | 3.6cm | 4.4cm | 5.1cm |
| 重量：55g | 114g | 180g | 257g | 350g |
| 插入長度：8.6cm | 11cm | 12cm | 13.3cm | 14cm |
